baber/WOPTO huggingface dataset:
Patent GB-532169-A (GB)
Title: Improvements relating to reinforcement for concrete constructions
IPC: E04C5/18
Filed: 1939-07-17
Abstract: 532,169. Making rods and bars. SMITH, W. H. July 17, 1939, No. 20760. [Classes 83 (ii) and 83 (iv)] Angular bending.-A machine for making clips for positioning bars in reinforced concrete comprises means for feeding a strip of resilient material between relatively movable dies which bend the strip into a U-shaped portion with reversely directed tail portions and means for separating from the strip a length sufficient to form the clip. The fixed die 2 is formed with a curved projection 4 and with recesses.3 formed at their ends, in conjunction with undercuts in the part 4, as arcs of circles 5 corresponding to the bends of the clip between the tail portions and the central U-shaped portion. The upper die which is mounted in a reciprocating head 7 comprises two prongs 9 pivoted at 10 and formed with arcuate grooves 11 to bend the strip round the projection 4 in smooth curve. Between the prongs 9 is a concave member 12 to bend the strip smoothly round the top of the projection. The dies are provided with co-operating shear blades 13, 14 and the die 2 is provided with an adjustable end stop 15. The head 7 is reciprocated by a lever 30 operated either by a treadle 36 or by a motor 33 through crank and connecting rod. During the actual motion of the head an adjustable abutment 28 carried thereby engages a lever 24 so as to operate a pawl 23 which through a ratchet wheel 22 and gearing rotates a feed collar 17 co-operating with a spring pressed feed collar 18 to feed the material from a coil 16. During the downward stroke of the head the strip is first cut by the blades 13, 14, whereupon the clip is formed. On the next upward movement of the head the finished clip is first ejected from the die 2 by prongs pushed forward by the lever 30. The strip may alternatively be fed by crank or cam mechanism. Specification 532,236, [Group X], is referred to.
Patent GB-154320-A (GB)
Title: A magneto carrier or support
IPC: F02P1/00
Filed: 1919-08-23
Abstract: 154,320. Simms, F. R., and Simms Motor Units, Ltd. Aug. 23, 1919. Magnetos, driving; dynamos, supporting and mounting on vehicles.-A magneto carrier or support primarily intended to adapt motor tractors to magneto ignition comprises a platform a secured to the frame by bolts c and a shaft casing d integral therewith and secured round the halftime shaft by bolts e<1> passing through the flange e<1>. The casing d carries a shaft g and pinion i engaging the toothed wheel j on the half-time shaft which drives the magneto A through the coupling h.
Patent GB-715697-A (GB)
Title: Improvements in and relating to the production of printed electrical circuits and elements for use in electrical circuits
IPC: H05K1/09
Filed: 1951-09-03
Abstract: A printing material suitable for use in the production of conductors in printed circuits consists of a metallic resinate, e.g. silver resinate in polybutyl methacrylate.
Patent GB-1489808-A (GB)
Title: Sulphonic derivatives of polyoxapolyfluoroalkanes
IPC: C08F2/26
Filed: 1975-05-16
Abstract: 1489808 Polyoxapolyfluoroalkane sulphonates MONTEDISON SpA 16 May 1975 [30 May 1974] 20806/75 Heading C2C [Also in Division C3] Alkali or ammonium polyoxapolyfluoroalkane sulphonates of general formula where the units -C 2 F 4 O- and -CF 2 O- are randomly distributed along the chain, m and n are integers, (m+n) is 2-10, m/n is 0À2-1À5; A is a monovalent radical of formula R is a divalent radical in α,γ or α,# position and is an alkylene, cycloalkylene, arylene or benzylene radical, and optionally contains one or more substituents chosen from Cl, alkyl and alkoxy groups, M is an alkali metal atom, H or ammonium group, B is the same as A or is -CH 2 OH, are prepared by reacting an α,# - bis - (hydroxymethyl)polyoxaperfluoroalkane of general formula HOCH 2 [CF 2 O(C 2 F 4 O) m (CF 2 O) n CF 2 ]CH 2 OH or an alkali metal or ammonium dialcoholate thereof with a sultone of formula The value of (m+n) is preferably 4-10. In the examples the compounds (i) in which m/n = 0À9 and the starting diol had mol. wt. 474, and (ii) where m/n = 0À9 and av. mol. wt. is 858, are produced.
Patent GB-1339849-A (GB)
Title: Process for the production of nitrogen containing amylose derivatives
IPC: D06M15/11
Filed: 1971-04-19
Abstract: 1339849 Amylose derivatives with urea K HAYASHIBARA 19 April 1971 [3 Feb 1970] 20811/71 Heading C3U [Also in Division D1] A short chain amylose having a polymerization degree in the range of from 15 to 50 is reacted with urea (or urea derivative) to produce a water-soluble carbamate. The reaction is carried out at a temperature of 110-140‹ C. in the presence of water (which subsequently evaporates) or in anhydrous solvents such as formamide and dimethyl formamide. The reaction may be catalysed with potassium acetate. A water-soluble methylolated short chain amylose urethane may then be produced by reacting the amylose carbamate with formaldehyde under slightly alkaline conditions at 40-60‹ C. The water soluble product is rendered insoluble by further heating. The short chain amylose may be obtained by subjecting a liquified solution of waxy maize or waxy rice starches to α-1,6-glucosidases. When common starch slurry is used, residual long chain amylose is removed by precipitation. An example discloses immersing cotton fabric, and mixed yarned fabrics comprising cotton and synthetic fibres, in an aqueous solution of methylated short chain amylose urethane containing 3% of zinc nitrate and heating them at 120‹ C. for 30 minutes whereby a water-insoluble film resistant to several vigorous washings in hot water was formed within the fabrics.
Patent GB-640940-A (GB)
Title: Improvements in or relating to electric starting systems for engines
IPC: F02N1/00
Filed: 1947-07-31
Abstract: 640,940. Starting prime movers. BENDIX AVIATION CORPORATION. July 31, 1947, No. 20846. Convention date, Sept. 23, 1946. [Class 38 (iv)] [Also in Group XXXVII] A control system for an engine-starting motor Sm, particularly for providing for disablement of the starting circuit upon back-fire of the engine, comprises normally open contacts 18, 26 in the coil circuit 7 of an electromagnetic starting contactor 4, the contacts being actuated by the combined action of a solenoid 14 (with a spring-loaded core 15) and a rotating part 46 of the engine. Contact 18 is carried by a member 21 rigid with the end of core 15, whilst contact 26, which is in the form of an arcuate strip mounted on an insulating sector 23, is carried by a pivot 22 mounted in a yoke 19 which is pressed against member 21 by a spring 27. Sector 23 carries a fibre block 32 which is adjacent the engine part 46. A spring 28 connecting sector 23 and yoke 19 . normally maintains one edge of contact 26 in alignment with contact 18. Closure of a manual switch 8 in the solenoid circuit causes core 15 to move the contact assembly bodily towards engine part 46, motion of contact 26 being arrested when block 32 engages the part and contact 18 then advancing into engagement with contact 26 and so closing the starting contactor 4. If the engine starts rotating in the correct direction, the action of part 46 on block 32 is to cause contact 26 to turn to the position shown in Fig. 3, in which the starting circuit remains closed until manual switch 8 is opened. Reverse rotation of part 46 during starting due to, say, back-fire, causes block 32 to move to the other side of the dead-centre position, so that contact 26 no longer engages contact 18 and the starting contactor 4 opens. In a modified arrangement, in which engagement of contacts 18, 26 is possible only if the engine is stationary, contact 26 disengages contact 18 as soon as part 46 moves the sector from the dead-centre position, irrespective of the direction of rotation of the part. A holding resistor is provided for the contactor coil 7 to prevent interruption of cranking current when contacts 18, 26 separate. In another arrangement the arcuate contact 26 is divided along a line paralleled to its pivotal axis. When contact 18 engages the first part of the divided contact the starting motor is energized in series with a resistor which is cut out to apply full voltage to the motor when the engine part 46 rocks the second part of the split contact into engagement with contact 18.
Patent GB-645980-A (GB)
Title: Improvements in or relating to the production of triazole derivatives
Inventor: KENDALL JOHN DAVID
IPC: C07D249/14
Filed: 1948-08-06
Abstract: Formamidines of the general formula <FORM:0645980/IV (b)/1> (or a tautomer thereof), wherein R1 represents hydrogen or an alkyl group, are manufactured by condensing an aminotriazole of the general formula <FORM:0645980/IV (b)/2> with an ester (preferably an alkyl ester) of orthoformic acid, in the proportion of at least 1 mol. of the latter to every 2 mols. of the former.  The condensation may be effected by heating the reactants together, preferably using a substantial excess of the orthoformic ester or working in the presence of an inert solvent, e.g. pyridine.  The products are useful as stabilizers for photographic emulsions.  In examples, ethyl orthoformate, in excess, is boiled with 3-amino-1 : 2 : 4-triazole or its 5-methyl or 5-ethyl derivative.  Specifications 447,038*, [Group IV], and 645,979, [Group XX], are referred to.  Aminotriazoles of the second general formula above are obtainable by the action of the appropriate acid, e.g. acetic or propionic acid, on aminoguanidine bicarbonate.
Patent GB-154674-A (GB)
Title: Improvements relating to means for damping or neutralizing vibration
IPC: F16F15/10
Filed: 1919-08-25
Abstract: 154,674. Bowen, E. W. Aug. 25, 1919. No Potent granted (Sealing fee not paid). Vibration-dampers.-Means are provided for damping vibration in a machine element by securing in fixed relationship thereto a member having a natural period of vibration differing in frequency from that of the element. In applying the invention to a driving-wheel, the rim of which engages frictionally with the face of a wheel at right-angles, a filling of molten lead may be poured into an annular cavity formed near the rim of the driving-wheel, the cavity being shaped to retain the lead in fixed position after setting. In another method, a flat ring of vulcanized fibre is secured on the rear surface of the driving-wheel as near as possible to the periphery.
Patent GB-187065-A (GB)
Title: Improvements in or connected with artificial limbs
IPC: A61F2/58
Filed: 1921-08-06
Abstract: 187,065. Blatchford, C. A., Blatchford, C. D., and Blatchford, W. A. Aug. 6, 1921. Limbs, artificial.-In an artificial limb of the 'type wherein two members are hinged together and are capable of being positively locked in various angular positions relatively to each other, one member c carries an internally-toothed drum a rotatably mounted on a pin d carried by the other limb member e. The invention is described with reference to an artificial arm in which the pivot pin d is screwed into a square block h on which slides an externally-toothed disc g normally pressed into engagement with the toothed drum, to lock the limb, by one or more springs i. A cable or the like k attached to a bridge-piece l on the disc enables the latter to be disengaged, and the lower limb-member may then be angularly adjusted by means of a control-cable j lying in a peripheral groove b on the toothed drum. A pivoted spring-actuated pawl m holds the disc out of engagement if it be withdrawn sufficiently to enable the hooked end n of the pawl to pass through an opening o and engage the back of the disc. This pawl is automatically tripped by a projection p on the toothed-drum when the drum is rotated to a predetermined angular position. The lock may be released by hand by pressing a button z on one end of a pivoted lever x, the other end y of which engages the bridge-piece l on the locking disc; otherwise the locking is controlled through a strap v by raising or lowering the shoulder, and the lower member is rotated by rounding the shoulders, a back view of the harness is given in Fig. 5.
Patent GB-315415-A (GB)
Title: Apparatus for separating oil and water
IPC: B01D17/02
Filed: 1929-07-08
Abstract: 315,415. M³ller, I. I. July 13, 1928, [Convention date.] Gravity-separation apparatus. - Apparatus for separating oil and water comprises an outer casing 11 and an inner floating chamber 4. The mixed liquids pass through a grid 1 into a chamber 2, where solid matter is deposited, the liquids passing on through a valve 3 and liquid seal 6 and over the cover 5 of the chamber 4 to the annular space between the chamber 4 and the casing 11. The lighter liquid collects on the surface and passes into the chamber 4 through openings 7 in its upper edge, while the heavier liquid flows away through a channel 9 and outlet 10. When sufficient lighter liquid has accumulated in the chamber 4 this chamber falls and allows the valve 3 to close. The apparatus may be arranged so that the chamber 2 receives liquid from a number of channels.
Patent GB-793412-A (GB)
Title: Improvements in or relating to stereotype plate finishing machines
IPC: B41D5/00
Filed: 1956-07-09
Abstract: 793,412. Printing surfaces. MIEHLEGOSS-DEXTER, Inc. July 9, 1956 July 7, 1955], No. 21183/56. Class 100(2) In a stereotype-plate finishing-machine including a frame having an arch, longitudinal support means for supporting the straight edges of a printing plate for sliding movement into a position under the arch and means associated with the support means for clamping the plate upwardly into the arch, a stop mechanism 25 is provided adjacent the path of movement of one of the straight edges of the plate and operative to hold the latter against axial movement when it is in position in the arch, such mechanism comprisinig a stop member 40 outwardly biased towards its operative position but having a cam portion 47 including a rib 47a arranged to engage a narrow ribbon like area 15a along the straight edge of the plate when the latter is slid into position under the arch thereby avoiding damage to the printing surface of the plate during the sliding movement, and a serrated clamping edge 55. In one embodiment the stop mechanism 25 is adjustably mounted between the arms of a flattened C-shaped frame member by screws 31, 32 which co-operate with slots 33, 34 in the frame member. Adjustment is effected by a screw 52. The member 40 is pivoted at 43 and biased outwardly by a spring 41, movement being limited by a pin 49 co-operating with a slot 48 in the member 40. The member 40 is also provided with a serrated edge 55 for gripping the plate after it has been slid into the arch. In an alternative embodiment the stop member 40 is mounted for pivotal movement about a horizontal axis the serrated edge then engaging the underside of the area 15a of a positioned plate (Figs. 8-10, not shown). For laterally positioning the extreme lower edge portions of the plate a pair of adjustable guide strips 61, 62 are secured to the main guide rails 16a, 17a (Fig. 7a) by mounting screws 63, 64 which are passed through elongated slots 65, 66 in the strips 61, 62 so as to permit limited lateral adjustment of the strips.
Patent GB-616264-A (GB)
Title: Improvements in or relating to fuel supply systems
IPC: F02D1/00
Filed: 1945-08-20
Abstract: 616,264. Fluid-actuated servomotor-control systems. PUGH, C. A., BOOTH, D. G., and PLESSEY CO., Ltd. Aug. 20, 1945, No. 21197. [Class 135] A fuel supply system comprises a fuel pump, a metering device with a variable orifice for delivering fuel to the engine, a primary control means consisting of a hydraulically-loaded governor, a metering pressure relay valve and a byepass for regulating the fuel pressure across the variable orifice according to the governor speed, and a secondary control means for adjusting the area of the orifice according to the governor speed. Fuel from a positive displacement engine-driven pump is supplied to the system via. the pipe 52 and passes through a variable orifice 55A and pipe 56 to the engine, or through a byepass valve 39 and pipe 52A to a sump. The governor 1, in which the hydraulic loading for producing various speeds is controlled by the valve 17 7 and constant flow valve 11, operates the valve 7 controlling the fuel flow from a point before the orifice via the pipe 27, orifice 38, diaphragm chamber 35, pipes 36, 34, diaphragm chamber 33 and pipe 50 to a point after the orifice, the pressure drop across the valve 7 being applied to the large diaphragm 24 and tending to close the metering pressure relay valve 22 connected to the diaphragm. The metering pressure across the variable orifice is applied to the small diaphragm 23 also connected to the valve 22 and tends to open it. The valve 22 controls the fuel flow from the point before the variable orifice via the pipes 29, 32 to the top and via the orifice 48 and pipe 47 to the bottom, of a spring-loaded piston 45 operating the byepass valve 39. The area of the orifice 55A is adjusted by the stem 55 of the piston 55B which is moved by fuel taken from the pump delivery via the pipe 73, constant flow valve E and piston control valve 62. A spring-loaded piston 69 positions itself according to the metering pressure via the pipes 72, 73, and adjusts the valve 68 controlling the movement of the servo-piston 66 for moving the piston valve 62. Slight variations in speed are corrected by variation of the metering pressure, while the variable orifice only alters if the change of speed is to be maintained. Specification 581,140 is referred to.
Patent GB-892383-A (GB)
Title: Method of testing the variations in density of the explosive filling along a length of fuse or detonator cord
IPC: G01N27/80
Filed: 1959-06-22
Abstract: 892,383. Determining physical dimensions by electric tests. DYNAMIT NOBEL A.G. June 22, 1959 [Sept. 6, 1958], No. 21324/59. Class 37. [Also in Group XXI] Variations in the density of the explosive filling of a detonator or fuse cord is tested by mixing the filling with a substance having a high magnetic permeability, for example highfrequency iron powder, and testing variations in the density of the filling by a magnetic method. The substance of high magnetic permeability is mixed with the explosive up to 5% by weight, based on the total weight of the explosive filling. The cord under test is moved through the coil of a high-frequency oscillator so as to vary its frequency. The output of the oscillator is then converted into D.C. voltage by a discriminator so that an indication of variations in the density of the cord filling can be read directly on a meter. Additionally, an automatic marking of discontinuities in the filling may be effected.
Patent GB-154975-A (GB)
Title: Improvements in crushing machines
IPC: B02C4/30
Filed: 1919-08-30
Abstract: 154,975. Russell, J. Aug. 30, 1919. Drawings to Specification. Roller mills.-The rollers of a crushing-machine are provided with integral longitudinal ridges and made in interchangeable sections. Reference has been directed by the Comptroller to Specifications 723/70, 4891/77, [Class 80, Mechanism &c.], and 8560/02.
Patent GB-1335917-A (GB)
Title: Rotatable axle for printing rollers
IPC: B41K3/08
Filed: 1971-04-19
Abstract: 1335917 Printing rollers ERNST REINER KG FEINMECHANIK UND APPARATEBAU 19 April 1971 [11 Feb 1970] 21499/71 Heading B6C A printing roller comprises an axle mounting a series of type wheels 1 and each wheel is locked relative to the axle by spring-loaded detent members 3 which are held in locking engagement with recesses 1<SP>1</SP> formed in annular inner surfaces of the wheels by a catch member 5 which, after alignment of wheels on the axle is forced longitudinally into an axle recess 6 until it locks in the position shown in Fig. 1. Each detent member 3 is slidable within a bore in the axle and, if required, the member may take the shape of a spring-urged ball.
Patent GB-914446-A (GB)
Title: Improvements relating to the moulding of plastic foam
IPC: B29C44/04
Filed: 1961-06-14
Abstract: In a process of simultaneously curing and moulding resinous foam-forming materials, such as polyurethane, which have an exothermic reaction when curing, the mould is preheated and the charge of materials includes a blowing agent which volatilises at the initial temperature of the mould and expands locally in the layer nearest the mould with the result that its latent heat of vaporization tends to keep the temperature of the foam down along its surface and by forming bubbles inhibits the transfer of heat into the resin from the mould.  The process is said to provide a strong and attractive skin on the finished article. Specification 914,448 is referred to.
Patent GB-727132-A (GB)
Title: Improvements in or relating to machines for making cardboard cartons
Inventor: COXHEAD ARTHUR
IPC: B31B50/25
Filed: 1950-09-04
Abstract: 727,132. Making cartons; packaging. THRISSELL ENGINEERING CO., Ltd. Aug. 24, 1951 [Sept. 4, 1950], No. 21728/50. Classes 18 and 94 (1). A machine for making openended tubular carton shells, scores and applies glue to blanks, folds them on two opposed creases and secures the overlapping edges, opens the tubes so formed and flattens them on the remaining two creases, opens them again and flattens them on the first creases, these operations being carried out without changing the lengthwise movement of the tube. The machine cuts the finished tubes into required lengths. Forming the tubes. Blanks 1 are fed to belts 6, 7 which carry them past a glue roller 9 and scoring roller 12. Rollers 15, 16 draw the blanks between guides 13, 14, and wheels 17 and a folding belt 18, turn over opposite ends of the blank to overlap at the glued edge. To secure the glue joint, the tubes pass between a drum 20 and belt 22 to a pair of slow moving belts 29, 30 where they accumulate in overlapping relation and the glue has time to set, as described in Specification 727,230. Refolding. The tubes pass onto a platform 39a where a vertically reciprocating stop 42 permits them to pass one a at time to the refolding section through which they travel at the same speed as the initial feed to the machine. The refolding section comprises sets of opposed grooved wheels of known kind which open and close the tube as stated above. Cutting to length. The tubes are received from the .refolding section by belts 50, 51 and aligned by a guide 56 and stop 57. Pivoted arms 61 press the side of the tubes protruding from the belts 50, 51 against belts 58, 59 which carry them sideways from between the belts 50, 51 to belts 68, 69. Each end of the tubes is aligned by reciprocating stops 71 which halt the tubes momentarily, and lengthwise alignment is produced at this point by a horizontally reciprocating plate 71a. The tubes are passed to cutting rollers 93 and the cut lengths are received on a platform 94.
Patent GB-630421-A (GB)
Title: Improvements in or relating to wireless signalling systems
IPC: G01S1/24
Filed: 1945-06-14
Abstract: 630,421. Radio navigation. WILLIAMS, F. C. June 14, 1945, No. 21732/48. Divided out of 630,367. Drawings to Specification. [Class 40 (vii)] The subject-matter is substantially the same as that in Specification 630,367. The claims are directed to a receiver for a radio navigation system of the kind in which information is provided by the difference in transit time of pulse signals from fixed spaced aerials to the receiver in which the received signals pass through a common channel until they are in'a form suitable for direct application to an indicator of pointer type. Specifications 581,602, 581,603, 605,053 and 615,416 also are referred to.