baber/WOPTO huggingface dataset:
Patent GB-721449-A (GB)
Title: Improvements in or relating to portable electric spot welders
IPC: B23K11/31
Filed: 1951-09-21
Abstract: 721,449. Welding by pressure. DIVERS, S. V., and YOXALL, F. Dec. 18, 1952 [Sept. 21, 1951], No. 22119/51. Class 83 (4). In a portable electric spot-welder having a toggle lever mechanism whereby the distance between the electrodes can be varied, the mechanism is adapted to lock the electrodes in their gripping position. In an embodiment a head 2 affixed to a transformer 3 carries an electrode 5 fixed in an aperture 7. Three split bushes 8, 9, 10; 8, 10 being of metal and 9 of an insulating material, are interposed between the electrode 5 and the aperture and a tightening means comprising a headed screw 17 in a transverse aperture 13 which engages a threaded collar 12 on one side of the split bushes and a clearance collar 11 on the other side which pulls the collars together to wedge against the bushes. A second electrode 6 is mounted in a similar manner but with only one bush, this of metal, in a block 20 pivoted at 21 to the head 2. A toggle operating device comprises an arm 32 pivoted at 31 to the block 20 and an arm 35 pivoted at one end to the arm 32 at 34 and at the other end at 36 to a block 37 adjustable in a guide 38 by a screw 42 acting against a spring 41. Movement of the arm 32 away from a handle 45 opens the electrodes 5, 6 while movement of the arm 32 towards the handle closes them. When the pivot 34 moves to a position on the same side of a line joining pivots 31, 36 as that of the pivot 21 and a nose 34a on the arm 34 engages the arm 32 the electrodes lock in position. Movement of the block 37 by the screw 42 varies the distance between the electrodes in their gripping position. A trigger 4 controls supply of current to the primary of the transformer, the secondary being connected to the electrode 5 through the bush 10 and to the electrode 6 by a strap 46. The arm 32 may be operated manually or by power.
Patent GB-998680-A (GB)
Title: Improvements in or relating to method and apparatus for manufacturing chains
IPC: B29C45/00
Filed: 1963-06-04
Abstract: 998,680. Injection moulding chains. ISABEL G.m.b.H. June 4, 1963 [June 2, 1962], No. 22121/63. Heading B5A. [Also in Division B3] A device for moulding chain links comprises a mould block assembly 9 which includes four movable mould elements, which when in moulding position define a moulding cavity 15 for forming a chain link K and a link holding cavity 16 which holds the finished chain link in a position in which it loops around the moulding cavity 15. Preferably a clamping head 10 is arranged below the assembly 9 and includes four clamping jaw elements, biased inwardly by annular springs 11, to position the finished link. In operation a new chain link K is injection moulded in cavity 15, the injection nozzle 5 is retracted, the mould 9 opened, the chain is drawn downwardly by sprocket wheels 12 through the clamping head 10 by a distance of one link, the clamping head is turned by 90 degrees, and the jaws of the mould are closed again. The chain link just moulded is thus positioned in holding cavity 16, and the procedure is repeated, except the clamping head 10 is in this instance rotated 90 degrees in the opposite direction. The injection machine includes a nozzle slidable in part 3c of the injection cylinder 3, and rigidly connected to a cross member 6. Two guide rods 8 are rigidly mounted on member 6 but slide in a cross member 7 rigidly connected to the injection plunger 2. As the plunger is retracted, when the member 7 engages abutments 8a on the rods 8, the nozzle is retracted, and engages needle 18 of a valve 4 to stop flow of material. When plunger 2 is moved down, the nozzle is forced down into contact with the injection passage 20, 21 of the mould 9, by pressure of the material. A suitable programming control may be provided, so that the apparatus is operated automatically.
Patent GB-479857-A (GB)
Title: Improvements in and relating to method of, and apparatus for, collecting and separating dust from dust-laden air
IPC: E21F5/20
Filed: 1936-08-12
Abstract: 479,857. Washing air. DOBBS, F. S. W., and ANDERTON, J. Aug. 12, 1936, Nos. 22187 and 26721. [Class 55 (ii)] Dust-laden air is treated with a mist of wetting agent (e.g. water or steam) within a tube-like duct, offering an unobstructed passage throughout its length, at a zone where its speed of How is greatest and the moistened air is caused to travel onward under pressure and velocity conditions which effect the deposition of dust on the dust walls. For treating air in the region of a belt conveyer K in a coal mine, the duct, which comprises an intake chamber A, a wetting neck passage B, and an expansion or depositing chamber C, is mounted above and to one side of the conveyer with a hood N over its intake and a tub M. The duct delivers through an extension P into a space above the conveyer screened by brattice cloth &c. R. Air is drawn in at the hood by the injector action of a nozzle directed into the neck B and supplied with compressed air and water through valved pipes 14, 15. Beyond the neck a ring of obliquely directed air jets effects turbulence of the moistened air stream or fixed or moving blades &c. imparting a gyrating motion may be provided. A fan may augment the flow of air or be substituted for the compressed air supply. Instead of compressed air, other media storable in liquid or solid form, such as solid carbon dioxide, may be used.
Patent GB-515828-A (GB)
Title: Improvements in or relating to electric switching devices for the control of moulding presses
IPC: H01H43/24
Filed: 1938-06-03
Abstract: 515,828. Actuation of switches. MOLDED INSULATION CO. June 3, 1938, No. 22187/39. Convention date, June 5, 1937. Divided out of 515,790. [Class 38 (v)] A device for controlling the operations of an automatic moulding press as described in Specification 515,790 comprises a series of tilting mercury switches such as 10 each of which is mounted in a carrier 17 pivoted at 18 and arranged so as to remain in its tilted position until tilted in the reverse direction. Each mercury switch is provided with a piar of actuating rods such as 25, 26 carried by parallel pivoted links 33, 34 and biassed upwardly by springs 37. The links 33 are continued as levers 20 adapted to engage under opposite sides of the switch carriers 17 to tilt the switches in alternate directions. The actuating rods are fitted with a series of adjustable dogs such as 25a, 26a for successive engagement by a rod 41 carried at its ends by two endless chains such as 42, driven though interchangeable gearing 52 ... 54 by a motor 50. By this means the switches 10 can be operated at the desired times and in the desired sequence for performing the various operations of the moulding press.
Patent GB-585436-A (GB)
Title: Improvements in and relating to the production of dl-n-formyl-isopropylidene-penicillamine
IPC: C07D277/06
Filed: 1944-11-10
Abstract: d - N - Formyl - isopropylidenepenicillamine is obtained via the racemization of the corresponding l-compound by heating the latter above 60 DEG  C. with a suitable acylating or halogenating agent. Specified substances are acetic anhydride, propionic anhydride and acetyl chloride, thionyl chloride and phosphorus trichloride; hot anhydrous formic acid is applicable, but disadvantageous.  An inert diluent of boiling-point exceeding 60 DEG  C. may optionally be present.  The racemic product is hydrolysed to penicillamine hydrochloride by warming with 2N-hydrochloric acid, which, in turn, is converted into isopropylidenepenicillamine hydrochloride by warming with acetone, this compound being resolved by the methods described in Specification 585,413 to obtain the requisite d-isomer. In examples: l-N-formyl-isopropylidenepenicillamine is heated with (1) acetic anhydride; (2) acetyl chloride; (3) 98 per cent formic acid and the respective solutions are concentrated in vacuo to isolate dl-N-formyl-isopropylidenepenicillamine; (4) l-N-formyl - isopropylidenepenicillamine is boiled with 98 per cent formic acid for 15 hours to isolate the racemic product; l-N-formyl-isopropylidenepenicillamine is heated on the steam-bath with (5) benzene and phosphorus trichloride; (6) benzene and thionyl chloride; (7) benzene and acetic anhydride; and (8) light petroleum and acetic anhydride, to isolate the racemic product.
Patent GB-772341-A (GB)
Title: Improvements in or relating to coking process
IPC: C22B1/14
Filed: 1955-08-03
Abstract: 772,341. Metallurgical coke. KOPPERS CO., Inc. Aug. 3, 1955 [Aug. 24, 1954], No. 22300/55. Class 55 (2). In the production of metallurgical coke by mixing coal with finely divided iron -oxide-bearing materials, and coking, an intimate mixture is assured by first mixing the iron-oxide fines with a small part of the coal charge and then blending the iron-oxide-coal mixture with the remaining portion of the coal charge. The iron-oxide fines may, e.g. be taconite concentrates, magnetite or hematite ores, or blast furnace flue dust. The coal and iron-oxide fines are preferably between 20 and 100 mesh. The mixing may be effected by running out the materials from their respective bunkers on to separate belts which merge, the materials thus mixed being blended with the remaining coal in any suitable apparatus. As an example, a first mixture of 10 to 45 per cent fine coal and 90 to 55 per cent of oxide fines is added to the remaining coal to produce a mixture of 20 to 60 per cent iron oxide fines and 80 to 40 per cent coal.
Patent GB-782225-A (GB)
Title: Well swabs and sealing means therefor
IPC: E21B37/10
Filed: 1955-08-03
Abstract: 782,225. Piston packing. WEBBER, J. C. Aug. 3, 1955, No. 22304/55. Class 122 (1). [Also in Group XXVIII] A well swab packing 25 comprises a number of axially-spaced inverted frusto-conical rings 28 having a cylindrical peripheral surface of substantially the same diameter as the bore of the well conductor C, each ring, in operation, being deformable downwards under a predetermined liquid load, Fig. 2, so that only its upper peripheral edge portion 29 makes sealing contact with the conductor wall and being further deformable downwards, when the predetermined load is exceeded, Fig. 3, to permit escape of liquid. The rings 28 are of rubber, synthetic rubber or like resilient material and are integral with a sleeve 26 preferably moulded to a re-inforcing tube 27 slidable on a hollow mandrel 10 having a ball valve 16 at its upper end. The rings may each be provided at their upper peripheral edge with an axial flange or bead that sealingly engages the conductor wall when the ring is in its operative downwardly-deformed position.
Patent GB-170919-A (GB)
Title: Levels for aeroplanes and other vehicles
IPC: G01C5/06
Filed: 1920-07-27
Abstract: 170,919. Luboshez, B. E. July 27, 1920. Levels.-In apparatus utilizing the difference in static pressure at different levels in a fluid as a measure of the difference in level between the two points, the static heads A, B are connected by a tube CT1, CT2, having a bent back portion BT containing a fluid CF the mass of which balances that of the fluid in the connecting-tube. The tubes CT1, CT2 may be connected to a manometer, or the desired indication of pressuredifference may be furnished by the movement of the fluid CF. To compensate for variations in temperature and pressure in the surrounding fluid, membranes may be fitted within the connecting-tubes near the static heads to prevent variations in the mass of fluid in the apparatus; membranes may also be used for separating the fluid CF from the remaining fluid, or the device shown in Fig. 3, which is suitable for use as a cross-level on aeroplanes, may be adopted. The connecting-tube contains a chamber C divided by a membrane M, and has a projection GR containing a gas which is insoluble in the liquid L. The compensating-liquid CL completely fills a reservoir LR formed in the tube BT. The volume of the gas in the reservoir GR varies with variations in external temperature or pressure and causes a variation in the length of the liquid column ab to compensate for the variation of the mass of gas in the connecting-tubes. The liquid in the reservoir LR balances off that in the chamber C so that the two liquid columns expand or contract proportionately. The effective length of the column of balancing liquid is the difference between de and ab. By sealing wires into the tube near the point a, movements of the liquid L may be made to control electric circuits which are arranged to control compressed air apparatus working the control parts of the vehicle carrying the instrument.
Patent GB-586179-A (GB)
Title: Improvements in and relating to electrical precipitation plant
IPC: B03C3/66
Filed: 1944-11-13
Abstract: 586,179. Supply systems for precipitators. HOLMES & CO., Ltd., W. C., SYKES, W., ELECTRIC CONSTRUCTION CO., Ltd., and MILNE, J. C. Nov. 13, 1944, No. 22367. Drawings to Specification. [Class 38 (iv)] An electrical precipitator is energized by pulses of unidirectional high-tension voltage obtained from an A.C. supply through a step-up transformer and a rectifier of the mercury pool type. The rectifier is preferably a gridcontrolled one to permit control of the length of the voltage pulses.
Patent GB-1436223-A (GB)
Title: Feed device for sewing machines
IPC: D05B21/00
Filed: 1973-05-10
Abstract: 1436223 Sewing machine G TOLLE 10 May 1973, [12 May 1972] 22367/73 Heading D1G In a button-hole sewing machine the work clamp 58 is moved intermittently in one direction, then intermittently in the opposite direction again, the reversing taking place automatically after the clamp has travelled a predetermined distance. The clamp is attached to a lead screw 38 which moves along an internally threaded bush 36 when the bush is rotated by a driving belt 20. The belt is indexed forward by clamps which grasp one run 20a (Fig. 2) of the belt and move it along intermittently. The jaw 24 (Figure 2) operates in a lazy tongs manner, and together with the foot of the lever 26 grips the belt when urged to do so through a linkage 21 by an ecentric 23 (Figure 4), and an adjustment frame 11. The frame 11 is driven from an eccentric 5 by a connecting rod 6 and links 8. The two eccentrics provide motion in perpendicular directions, and by adjustment of the phases of these motions the magnitude and direction of the belt indexing movement of the jaws may be varied. To reverse the drive: the lead screw 38 is attached to a bracket 52 and finger 56 which strikes an arm of a yoke 54 as it moves (say) to the right. The yoke pivots clockwise on pin 59 and a stop shoulder 54a releases a stop 60a on a stop disc 60. The stop disc rotates clockwise, driven by a worm 61 and gear, and a 'hose 41a fixed to the disc strikes an end 42b of a bell crank lever 42 and rotates it anticlockwise. The lever 42 is linked by a link 43 to a sleeve 44 and causes it to rotate. The sleeve is linked to the adjustment frame 11 (Fig. 3) by a link 45, which because of a spring 47 flicks from one extreme position to the other, thus reversing the phase of the belt indexing movement. When the lead screw 38 reaches the other end of its travel a similar procedure occurs when the finger 56 strikes the other arm 53 of the yoke. In another embodiment (Fig. 8) eccentrics drive clamping jaws 87, 90a via a simpler mechanism and the reversing is actuated by moving a lever 76 manually. The belt drives a shaft 98, 95, which operates a wheel feed mechanism. In a further embodiment (Fig. 9, not shown) the belt drives a shaft carrying a worm which rotates a cam (114). The movement of the work clamp (118) is controlled by the cam through a series of links (116, 117).
Patent GB-1041392-A (GB)
Title: Improvements relating to electric incandescent filament lamps
IPC: H01K1/24
Filed: 1963-06-05
Abstract: 1,041,392. Electric incandescent lamps. GENERAL ELECTRIC CO. June 5, 1963 [Aug. 30, 1962], No. 22375/63. Heading H1F. The filament of an electric lamp having a tubular envelope 1 closed at each end by a pinch seal 2, is supported intermediate its length by at least one hair-pin shaped wire 6 having the end portions of its legs embedded in one of the pinch seals at opposite sides of the lead-in wire 4 so that the legs extend along the tube on opposite sides of the filament 3, the bight of the wire having a loop 7 encircling the filament. In the case of a longer lamp two such supports may be provided at opposite ends of the envelope. The ends of the filament are attached to thin foliated portions 5 of the leadin wires 4 within the pinch seal, preferably by welding with a tab of platinum interposed. The envelope may contain an inert gas with or without a reactive atmosphere such as a halogen, especially iodine. The support 6 may first be inserted in the tube, the filament threaded through the loop 7 and the end of the tube pinch sealed enclosing the ends of the legs of the support. The other end is then pinch sealed and the envelope evacuated and filled with the desired gas filling.
Patent GB-755825-A (GB)
Title: Improvements in or relating to electronic computing apparatus
Inventor: WILLIAMS FREDERIC CALLAND
IPC: G06J1/00
Filed: 1951-09-25
Abstract: 755,825. Automatic voltage control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 25, 1952 [Sept. 25, 1951], No. 22425/51. Class 38 (4). [Also in Groups XIX, XXXVI and XL (c)] In an analogue adding arrangement (see Groups XXXVI and XIX) supply lines of + 150 volts and - 150 volts are carefully stabilized and equally balanced with respect to the control grid of a valve VI. These potentials are obtained from a floating power source which includes a transformer T, rectifier DR and smoothing filter network L1, L2, R20, C1, C2, C3, C4. The +150 volt line has a small leak to ground via R19 and this is made good by current through a valve V5 whose anode is connected to a higher source of potential. Any decrease of the positive line potential decreases current flow to the line 10 and causes a rise of anode potential of valve V4‹. This reduces the screen current to cause a rise of screen potential which is communicated to the control grid of V5, thereby increasing the flow through this valve to boost the positive line potential. When any of the input leads 1L0, 1L1 ... &c. of the adding arrangement becomes excited the valve V4‹ always " bottoms " and the accompanying decrease of screen potential immediately cuts off the valve V5 and inhibits the whole of the servo action during use of the arrangement. The circuit of a valve V6 and diode DT serves to limit the swing of the screen grid potential of V4‹ to a reasonable value when this valve " bottoms and returns to its quiescent intermediate condition so as to ensure fast operation of the circuit. Specifications 657,591, 705,474, 705,479, 731,341 and 742,522, [all in Group XIX], are referred to.
Patent GB-420114-A (GB)
Title: Improvements relating to spectacle or eye-glass cases
IPC: A45C11/04
Filed: 1933-08-11
Abstract: 420,114. Spectacle cases. WHEWAY, F. H., 214, Barr Street, Birmingham. Aug. 11, 1933, No. 22450. [Class 97 (i)] A case for spectacles or eyeglasses consists of a front member a and rear member b spaced apart to enable the spectacles to be inserted and held between them. The upper edge of the member a is centrally recessed as shown to facilitate access to the spectacles, and this edge may also be flared outwardly to facilitate insertion of the spectacles. The upper edge of the member b may be bent over to overhang the space between the members a, b, and retaining flanges or stops may also be formed on. the member b. Abutment pieces h may be provided on the member a to contact with the lenses of the spectacles.
Patent GB-1254487-A (GB)
Title: Steroido-oxazolines,-oxazolidines, -oxazolidino-oxazines, intermediates and processes for the production thereof
Inventor: NATHANSOHN G
IPC: C07J71/00
Filed: 1969-05-02
Abstract: 1,254,487. Steroido - [16α,17α - d] - oxazolines, -oxazolidines and -oxazolidino-[3,4-c]- oxazines and intermediates therefor. GRUPPO LEPETIT S.p.A. 2 May, 1969 [3 May, 1968], No. 22523/69. Heading C2U.  Steroids of the partial formulµ (showing positions -16 and -17) (wherein R<SP>1</SP> is H, OH or acyloxy; each R is H, C 1-8  alkyl or aryl; and R<SP>2</SP> is C 1-8  alkyl or aryl) are prepared by reacting a 21-unsubstituted steroido-[17α,16α-d]-oxazoline containing an appropriate 17-side chain with an acid to give the corresponding 16α - hydroxy - 17α - aminosteroid and then either reacting this with an anhydride (R<SP>2</SP>CO) 2 0 of an alkanoic or arylcarboxylic acid in the presence of a tertiary nitrogen base to give the required 2<SP>1</SP>-substituted - steroido - [17α,16α - d] - oxazoline or reacting it with an appropriate aldehyde or ketone RCOR to give the required steroido-[17α, 16α - d] - oxazolidine or steroido - [17α,16α - d]- oxazolidino-[3,4-c]-oxazine. If R<SP>1</SP> is OH a mixture of the two last-named products is generally formed while if R<SP>1</SP> is H or acyloxy only the first of. these two products is formed; the first may then if desired be converted to the second (when R<SP>1</SP> is OH) by further reaction with RCOR. Novel intermediates and products have the formulµ  (wherein R and R<SP>1</SP> are as above, Z and.Z<SP>1</SP> are each CHOH or CHO, X is H or halo, and the A<SP>1</SP>- and #<SP>4</SP>-double bonds are optional, any OH groups in the 3- or 11-position having alpha or beta configuration). 11#,21 - Dihydroxy - 9α- fluoropregna - 1,4 - diene - 3,20 - dione - [17a, 16α-d]-oxazoline 21-benzoate is prepared from the free diol and benzoic anhydride. Specifications 1,077,392 and 1,077,393 are referred to.