baber/WOPTO huggingface dataset:
Patent GB-1133664-A (GB)
Title: Improvements in or relating to cutting of workpieces
Inventor: BRAUNLICH BRUNO
IPC: B23D21/00
Filed: 1966-02-17
Abstract: 1,133,664. Shearing. ZENTRALINSTITUT FUR FERTIGUNGSTECHNIK DES MASCHINENBAUES. 17 Feb., 1966, No. 7009/66. Heading B3W. A bar-cutting shear comprises a tool-guiding structure 1 in which slides a frame 5, the frame having an anvil 31 which is struck by a projection 4 mounted on a disc 3 secured to a rotating shaft 2. A jaw 7 is fixed in the frame 5 and forms with a jaw 8 the movable cutter of the shear. The jaw 8 is mounted on the pistonrod 10 of a piston 11, the cylinder for which is formed by the hollow piston-rod 13 of a second piston 15. The hollow piston-rod 13 is rigidly connected to the frame 5 and the cylinder 14 is mounted on the guiding structure 1. There are ports 18 and 33 for the admission of pressure fluid to the cylinder 14 and there are ports 16 by which the fluid enters the cylinder space above the piston 11. The bar 9 to be cut is held between the jaws 7 and 8 of the movable cutter and extends on each side of the movable cutter between clamps which form the stationary cutters. The clamps are each formed by a pair of jaws (20, 22 and 21, 23), Fig. 2 (not shown), the jaws (20 and 21) being attached to the tool guiding structure and the jaws (22 and 23) being individually actuable by pressure fluid cylinders. Operation.-In the rest position the frame 5 contacts a stop surface 28 and the jaws 7 and 8 are separated by a spring 12. The bar 9 is moved between the jaws 7 and 8 and pressure fluid admitted to the cylinders which close the jaws (20, 21, 22, 23) of the stationary cutter. Pressure fluid is then admitted through the port 18 and passes through the ports 16. The piston 11 then presses the jaw 8 against the bar with a force which is at least equal to the cutting force. At the same time the piston 15 applies the jaw 7 to the bar 9 and produces a preliminary loading in the cross-section to be cut which is approximately equal to the elastic limit of the bar material. Shearing occurs when the anvil 31 is struck by the projection 4. The piston 15 is decelerated by the build-up of pressure in the cylinder space 32.
Patent GB-215149-A (GB)
Title: Improvements in or relating to printing mechanism for cancelling cheques, certificates and the like
IPC: B41K3/14
Filed: 1923-03-12
Abstract: 215,149. Jackson, W. J. Mellersh-, (International Postal Supply Co. of New York). March 12, 1923. Stamp-cancelling machines;tripping-arrangements.-A machine for cancelling cheques or the like is driven by gearing from an operating shaft driven by a motor suspended from spaced shafts and geared to one of the said shafts. The normally idle cancelling die is connected to its operating shaft by means controlled solely by the cheque as it is fed to the die. The cheques &c. are fed from a support 28 by a roller 29 under an adjustable gate 31 which carries with it a roller 33 coacting with a feed roller 37, from which the sheets pass to feed rollers 39, 40. A feeler lever 88 is arranged near the roller 40 and the action of the cheque on this releases friction clutch mechanism, shown in Fig. 5, to cause the driving of the printing roller 9. The printing and impression rollers 9, 14, and the feed rollers are driven by a motor 42, Fig. 4, suspended from a plate 44 which is mounted in bearings freely supported on shafts 30, 41, on which driving-gears are mounted. The motor and gearing are arranged in a side-casing 5 enclosed in a cover 8, and the motor shaft 46 is fitted with a fan 51 to cool the driving-mechanism. The shafts 46 drives the shaft 41 by worm gearing, and this shaft 41 is geared to the shaft 11 of the impression roller 14, and also to the constantly rotating member 19, Fig. 5, of the friction clutch. A housing 55 protects the gearing between the shafts 41, 11, and also a housing encloses the worm gearing between the shafts 46. 41. As shown in Fig. 4, the shaft 41 is geared to the shafts 38, 32, 30 of the feed rollers, the shaft 32 being driven in the same direction as the shaft 38 so that adjacent surfaces of the rollers 33, 37 move in opposite directions, thus avoiding double feed. The constantly driven sleeve 21, Fig. 5, is freely mounted on the shaft 10 of the printing-roller and is pressed by a splined collar 24, acted on by a spring 26, so as to tend to rotate a sleeve 22 fixed to the shaft 10. The sleeve 22 is fitted with a roller which is normally held by a roller 104, Fig. 4, on an arm 103. This arm 103 is actuated to release the sleeve 22 when the lever 88 is moved by the sheet, the levers 88 and 103 being connected by lever-and-link mechanism. The roller 104 stops the drive automatically after one revolution of the printing-roller. Counting-mechanism.-A counting-apparatus may be operated by a link at each operation of the lever-and-link mechanism, or a star wheel 73, Fig. 4, may be operated by a pawl 74 on the sleeve 22.
Patent GB-1536019-A (GB)
Title: Catheters
IPC: A61M25/04
Filed: 1976-02-24
Abstract: 1536019 Retention catheter with seal E L ADAIR 24 Feb 1976 07137/76 Heading ASR A catheter comprises distally connected inner and outer, relatively slidable, flexible tubes 14, 12, the outer one 14 of which is provided with axial or helical slits 18 whereby strips 20 buckle outwardly upon relative outward axial movement of the inner tube. Movement of the inner tube causes a seal 40 and retaining arrangement 42 to engage against a conical wall 28 and lock the tubes relative to each other and prevent fluid leakage from between them. The tubes 12, 14 are joined at their inner end, e.g. by heat sealing 16, cement, or a reverse fold Fig. 4 (not shown) of the outer tube. A rigid sharp ended trocar 46 may be provided for movement by plunger 48. In an alternative form of the seal and retaining arrangement a flexible ratchet type assembly can be used Fig. 2 (not shown). Alternatively a resilient bellows connection between the outer tube and housing 36 is prevented from expanding by a removable clip Fig. 3 (not shown), the bellows, when in its expanded form, retaining the tubes in their relative axial positions in which the strips are buckled.
Patent GB-998028-A (GB)
Title: Improvements in or relating to plural channel superheterodyne receivers
IPC: H04B7/08
Filed: 1962-02-23
Abstract: 998,028. Superheterodyne radio receiving systems. COMPAGNIE GENERALE DE TELEGRAPHIE SAN FIL. Feb. 23, 1962 [Feb. 24, 1961], No. 7149/62. Headings H3Q and H4L. In a multi-channel receiving system of the superheterodyne type more particularly for direction-finding receivers of the kind wherein the amplitudes of signals received on a number of receiving channels are compared to ascertain an incoming signal direction, signals of the same carrier frequencies from the same source are converted into the respective channels of the receiver to the same I.F. by mixing them with a heterodyning signal produced by combining signals of the said carrier frequency from the said source received on a further channel with a fixed frequency equal to the I.F. As shown in Fig. 1 in a multi-channel D.F. receiver, V.H.F. signals of frequency F from directional aerials Gl, G 2 , G n  are supplied to respective mixers M 1 , M 2 , M n  and signals of frequency F from an omni-directional aerial Go are supplied via an amplifier 10 to a modulator 13. An oscillator 14 provides a signal / of much lower frequency than that from 10 to the modulator 13 and the sum or difference frequency (as described, F +f) is supplied via a divider 16 providing frequencychanging signals of equal amplitude to the respective mixers M 1  to M n  which feed IF. amplifiers A 1  to An. After detection at D 1  to D n  and amplification at B 1  to B n , the information contained in the relative amplitudes of the signals is utilized in known manner. In a modification to reduce the effect of noise, Fig. 2, the signal from the auxiliary aerial Go is combined in modulator 13 as before with a signal from oscillator 14, the output F +f being amplified at 15 before application to the device 16. The outputs S 1  to S n  of the device 16 are coupled through isolators T n  &c. to the respective mixers M n  &c., and an additional output S n  is coupled via an isolator Ta to a further mixer Ma, like the mixer M n , but having a matched load 18 coupled to one input. It is stated that this causes the intermodulation of parasitic signals resulting from noise applied to the other input of Ma, the output of Ma being fed into a device 19 providing outputs on leads U 1  to U n  of adjustable amplitudes. The signals on the leads U 1  to U n  are of opposite phase to the signals applied to the I.F. amplifier A 1  to An and are also applied to the I.F. amplifiers to balance out the noise signals in each channel. The incoming signal at G 0  may be pulse modulated by a device M so that the output amplifiers do not pass a continuous D.C. component. A further output S 0  from 16 is detected at D 0 , amplified at B o  and may be used for triggering a cathode-ray tube or providing a.g.c. for amplifiers 10 and A 1  to An.
Patent GB-907424-A (GB)
Title: 2-methyl-3-phenyl-3-propionyloxypyrrolidines
Inventor: CAVALLA JOHN FREDERICK
Filed: 1961-02-27
Abstract: The invention comprises compounds of the general formula: <FORM:0907424/IV (b)/1> and their acid addition salts, wherein n is 1 or 2, R is a hydrogen atom, a phenyl or phenoxymethyl group, and R1 is a hydrogen atom, a propionyl or a b -hydroxyethyl group and the preparation therefore (a) by reacting 2-methyl-3-phenyl-3-propionyloxypyrrolidine with a compound of the general formula <FORM:0907424/IV (b)/2> wherein X is a reactive ester group; (b) (wherein R1 is H only) (i) by reacting 2-methyl-3-phenyl-3-propionyloxypyrrolidine with an epoxide <FORM:0907424/IV (b)/3> or (ii) by reducing the keto group in the compound of the general formula <FORM:0907424/IV (b)/4> or (c) by reacting a hydroxy compound of the general formula <FORM:0907424/IV (b)/5> wherein Z is a hydroxy or propionyloxy group with a propionic acid or a reactive derivative thereof.  Where the compounds of the invention may exist in optically active forms, racemic mixtures may be resolved into their optical isomers. 2-Methyl-3-phenyl-3-propionyloxypyrrolidine is condensed with (2-benzoylethyl)-trimethylammonium iodide to give 1-(2-benzoylethyl)-2-methyl - 3 - phenyl-3-propionyloxypyrrolidine which may be reacted with lithium aluminium hydride to give 1 - [(3 - hydroxy-3-phenyl)-propyl]-2-methyl-3-phenyl-3-pyrrolidinol.
Patent GB-622381-A (GB)
Title: Improvements in or relating to electric circuit-breakers having arc-extinguishing means
IPC: H01H9/38
Filed: 1947-03-14
Abstract: 622,381. Arc-rupturing in switches. BENDIX AVIATION CORPORATION. March 14, 1947, No. 7214. Convention date, April 1, 1946. [Class 38(v)] In a circuit-breaker, the contacts 4, 5 comprise portions 6 of material of high electrical conductivity, e.g. silver, and portions 7 of arc-resistant conducting material, e.g. carbon. The portions are carried by plates 8, which attach the contacts 4, 5, respectively, to the arm 2 and, through insulation 9, to a blow-out, permanent magnet 10, the poles of which are so arranged that the arc drawn between parts 6 is blown on to parts 7. The parts 6 are raised slightly above parts 7.
Patent GB-181110-A (GB)
Title: Improvements in metal air propellers and the like
IPC: B21D53/78
Filed: 1921-03-05
Abstract: 181,110. Leitner, H. March 5, 1921. Screw propellers.-Hollow laminated sheetmetal blades for screw propellers have bent-over edges, the longitudinal joint or joints being formed in one or both faces or at the trailing edge. When one joint is used, the edges c, d are bent over and the joint e, Fig. 13, is a riveted lap joint. With two joints e, Fig. 3, the joints are in each face; alternatively both joints e, Fig. 12, may be in one face. The joint may be formed with a butt strap or straps, or, as in Fig. 8, be folded over and clinched. The joints may also be made by welding. In a modification, a joint is made at the trailing edge only.
Patent GB-364930-A (GB)
Title: Improvements in or relating to electric torches, flash lamps and the like
IPC: F21V23/00
Filed: 1931-03-09
Abstract: 364,930. Snap-action switches. EVER READY CO. (GREAT BRITAIN), Ltd., Hercules Place, Holloway, and BEESTON, E. F., Iredene, Barrowell Green, Winchmore Hill, both in London. March 9, 1931, No. 7293. [Class 38 (v).] The switch of an electric torch, flash lamp or the like comprises a button or stud which is associated with means to restrain it against depression when in its inoperative position, thereby preventing accidental closing of the circuit. The button 1, Fig. 5, is mounted upon one end of a resilient blade 6 which is riveted on the underside of an inverted metal channel member 4 secured to the metallic battery casing 3. When depressed the blade 6 is put into contact with a metal strip 7 mounted on a plate of insulating material 8 secured within the torch casing. One end of the strip 7 passes freely through a hole 10 in the torch casing and plate 8 and is offset to lie beneath the button 1, the other end of the strip 7 being connected to a metal diaphragm 9 carrying the lamp socket. A sliding member 11 mounted upon the inverted channel 4 is retained thereon by inturned lugs 12, Fig. 3, engaging within slots 13 in the outer walls of the channel 4, the slots being longer than the lugs 12 to enable the member 11 to be reciprocated. The button 1 projects upwardly through an aperture 14 in the slide and is provided with a horizontal slot 15 which engages one edge of the aperture 14 when the slide is in its rearward position, thus preventing the button from being depressed. The edge of the aperture 14 opposite to that which engages the button 1 is bent upwardly to form an inclined cam surface 18 which bears upon the button and depresses it when the slide is moved forwardly. The slide is retained in either its forward or rearward position by protuberances 16 thereon engaging within recesses 17 in the inverted channel 4. A knurled projection 19 facilitates manipulation of the slide. In a modification the slide is formed with a concave depression which forms a thumb or fingerpiece and provides a cam surface for depressing the switch button.
Patent GB-789974-A (GB)
Title: A process for the selective reduction of polyoxosteroids
Inventor: NORYMBERSKI JULIUSZ KONARD
IPC: C07J1/00
Filed: 1954-03-12
Abstract: Hydroxy-substituted-steroids are prepared by the selective reduction in solution of polyoxosteroids containing the 3-oxo-4-ene grouping with an alkali metal complex hydride of an element of Group III of the Periodic Table, preferably sodium borohydride, the complex metal hydride being employed in such a proportion and at a temperature not exceeding 30 DEG  C., and at a pH of at least 5 and for such time that reduction of one or more keto groups in a position or positions other than the 3-position to a hydroxyl group or groups is effected without any substantial reduction of the 3-oxo-4-ene grouping. Examples of other alkali metal complex hydrides which may be used are potassium borohydride, lithium aluminium hydride, lithium borohydride and sodium trimethoxy borohydride.  The solvent used in the above process may be methanol, aqueous methanol, tertiary butanol, isopropylamine, pyridine, dioxane or tetrahydrofurane.  The pH of the solution is preferably more than 6.5.  In the examples 17b -hydroxyandrost-4-ene-3-one is prepared from androst - 4 - ene - 3,17 - dione; 17a ,20b ,21 - trihydroxypregn - 4 - ene - 3,11-dione is prepared from 21 - acetoxy - 17a  - hydroxypregn - 4 - ene - 3,11,20 - trione and is then acetylated to form 20b ,21 - diacetoxy-17a  - hydroxypregn - 4 - ene - 3,11 - dione; 11b ,17a ,20b ,21 - tetrahydroxy - pregn - 4 - en-3-one is prepared from 21-acetoxy-11b ,17a -dihydroxypregn - 4 - ene - 3,20 - dione and is acetylated to form 20b ,21 - diacetoxy - 11b ,17a -dihydroxypregn - 4 - en - 3 - one; 11 - oxotestosterone is prepared from androst - 4 - ene-3,11,17 - trione; 20b ,21 - dihydroxypregn - 4-ene-3-one is prepared from desoxycorticosterone and is acetylated to form 20b ,21-diacetoxypregn - 4 - en - 3 - one; 20b  - hydroxypregn-4 - en - 3 - one is prepared from progesterone; and 20b  - hydroxypregn - 4 - ene - 3,11 - dione is prepared from 11-oxoprogesterone.
Patent GB-917263-A (GB)
IPC: H02K31/00
Filed: 1959-03-03
Abstract: 917,263. Homopolar machines. REINERS, W., and WIGGERMANN, G., [trading as REINERS & WIGGERMANN]. March 3, 1959 [March 3, 1958; April 3, 1958], No. 7326/59. Class 35. In a homopolar machine, the current conductors are on the stationary member instead of on the rotor as is usual, and the coaxial field coil is also mounted on the stationary member. In the form of the invention shown in Fig. 1, the rotor B carries annular poles 5, 6 co-operating with slotted stator poles 3, 4 carrying slot-conductors 10, interconnected in series or parallel through apertures 11, in the stator core A. Excitation is provided by a fixed coil F, or by permanently magnetizing the rotor core B. The stator core may be slotted or split to facilitate winding. In a modification (not shown) the outer member may rotate. The E.M.F.'s generated in the two stators are of opposite sense, but in the modification shown in Fig. 3, the rotor consists of two oppositely-rotating parts B, C to make the stator voltage progressively in the same direction. In this form, the conductors are replaced by a magnetic or non- magnetic bush or plating layer 18 extending across both stators in series. This type of machine, besides acting as an A.C. or D.C. motor when suitably excited, will also operate as a coupling, one rotor generating and the other motoring. In a further modification, the bush 18 may be centre-tapped. Moreover, the conductor bush 18 may have helical slots (not shown) giving the current a rotational component to strengthen the excitation field. If desired, conical air-gaps may be used to avoid the use of the curved rotor laminations shown. In the modification shown in Fig. 5 the stator cores A are situated between separate oppositely-rotating rotors B, C excited by concentric stationary field coils F. The stator conductors 27 are cross-connected to provide series-addition of voltage. Having two rotors, this form may also be used as a coupling. Various combinations, applications and driving arrangements of the above-described forms of the invention and suitable shunt and series excitation arrangements are described. Where the conductor bush needs to be short-circuited for power transmission this may be done through a concentric tubular conductor inside the central core (Fig. 19, not shown). The ratio of power transmission arrangements may be automatically regulated by axially moving at least the rotor core of the motor element (Fig. 20, not shown). The machine cores may be of powdered material, e.g. carbonyl iron sintered or bonded by resin or ceramic.
Patent GB-869146-A (GB)
Title: Improvements in or relating to push rods and methods of making the same
IPC: F01L1/14
Filed: 1958-03-07
Abstract: 869,146. Valve gear. BUNDY TUBING CO. March 7, 1958 [April 1, 1957], No. 7345/58. Class 7(6). A push rod is formed by a tube 26 in the open ends of which ballshaped bearing members 24 are secured e.g. by resistance welding. The pressure applied to the ball 24 during welding may cause splaying of the end 27, Fig. 2, of the tube; alternatively the ends of the tube may be rounded inwardly at 37, Fig. 4, before securing of the balls 38.
Patent GB-753377-A (GB)
Title: Improvements in or relating to method for the digestion of cellulose-bearing material
Inventor: SEGL WALTER EBERHARD
IPC: D21C3/24
Filed: 1954-03-12
Abstract: <PICT:0753377/IV(a)/1> <PICT:0753377/IV(a)/2> In the continuous treatment of cellulosebearing material under pressure, the material is fed into the pressurized treating apparatus by continuously forming the material into a pressure-resistant plug which is continuously extruded into the apparatus and disintegrated therein. Disintegration is preferably effected by a compressive force, e.g. a ram acting on the end of the extruded plug, in a direction opposite to the movement of the plug.  The end of the ram can be so shaped that, in the event of the extruded plug disintegrating or breaking off short, the ram closes the point of entry of the plug into the pressurized chamber, to prevent blow-back.  The material may be subjected to a preliminary wetting or chemical treatment and, upon being compressed to form the extruded plug, entrained liquid is removed. After digestion, the material may again be extruded as a plug and disintegrated.  The material under treatment may be cotton linters, comminuted wood, wheat straw, bagasse, pulp requiring further refinement, or the like.  In Fig. 1, linters and caustic soda solution are passed through lines 1 and 2 into a mixer 4 and fed by screw-conveyer to apparatus 10 wherein it is compressed to remove entrained liquor and is formed into a plug and extruded into chamber 43 and disintegrated therein by ram 14 (details below).  The disintegrated material is treated under pressure in digesters 19, being progressed therethrough by screw conveyers, and is again extruded as a plug in apparatus 26, disintegrated by ram 29, still under pressure, and thence to a blow tank 34 wherein blow valve 36 is actuated at ten-second intervals, and into tank 35 at atmospheric pressure.  One form of plug forming and disintegrating apparatus is shown in Fig. 10.  Material enters at 1, is compressed by screw 20, entrained liquid being removed at 6, the material passing through a forming tube 5 and being extruded as an annular plug surrounding the screw shaft 21.  The extruded plug is broken up by ram 23, the disintegration being assisted by the sharpened ends 20a of the two screw flights.  The rotating shaft 21 passes through the ram and the ram is suitably splined to prevent rotation thereof.  Should the plug disintegrate within the forming tube 5, the ram closes the end of tube 5 to prevent blow-back.  This may be effected automatically by controlling the ram according to the power requirements of the motor driving the screw, a sudden drop in power following failure of the plug causing the ram to be actuated.  In a modification, the shaft 21 is hollow and pressure steam passes therethrough and emerges through perforations within the plug, to assist disintegration thereof. Alternatively, the extension 21 of the screw-shaft may be omitted.
Patent GB-721771-A (GB)
Title: Improvements in or relating to piston rings
IPC: C25D7/04
Filed: 1952-03-21
Abstract: 721,771. Piston packing. WELLWORTHY, Ltd., [formerly WELLWORTHY PISTON RINGS, Ltd.], and HOWLETT, J. W. March 19, 1953 [March 21, 1952], No. 7391/52. Class 122 (1). [Also in Group XXXVI] A recessed piston ring is chromium plated on the lands of the working periphery, the corner edges of the lands and preferably the edges of the recesses being removed as by chamfer-, ing before or after the filling of the recseses in the chromium plating operation to prevent excessive deposition of chromium at these points. The drawing shows the rings 1 mounted on a sleeve 3 with the recesses filled with wax 2 preparatory to plating, the rings being chamfered both in the groove and on the outside edges where the rings abut one another. The invention is applicable also to inert and to inwardly-springing rings.