baber/WOPTO huggingface dataset:
Patent GB-268543-A (GB)
Title: Weighing machine
IPC: G01G1/28
Filed: 1926-03-22
Abstract: 268,543. Rival, T. March 22, 1926. Addition to 237,550. Loose-weight apparatus. - The weighing-scale claimed in the parent Specification is modified by connecting the pendulous resistant to one arm of each of the two weight-carrying beams and by dispensing with the auxiliary balance. As shown in Figs. 1 and 2, the machine comprises a beam 1 carrying at one end 4, a goods-plate 5, and at the other end, a frame 6 integral with a weightplate 7. Two equi-armed beams 8 provided with stirrups 31, 32<1> 31<1>, 32, are each adapted to support two series of loose weights 12, 13', 12', 13. The weights are all of equal magnitude and are provided with projections 34 for engagement with the plate 7. Diagonally-opposed stirrups 31, 32 are connected through rods 26 and a lever 15 to a pendulous lever 20, which is balanced at no-load by providing one more weight in each of the series 12', 13' than in the series 12, 13. In operation, the application of a continuously increasing load to the goods-plate 5 causes the plate 7 to engage those weights of the series 12<1>, 13<1> having the lowest projections 34, and thereby causes the yokes 31<1>, 32' to rise and the yokes 31, 32 together with the pendulous lever to descend until the decrease in the pull exerted by the pendulous lever owing to its descent is equal to the weight of the two weights engaged, which are thereupon raised from the stirrups 31<1>, 32<1> and supported upon the plate 7. A further upward movement of the plate 7 causes it to engage the first two weights of the series 12, 13 and thereby raise the pendulous lever and allow the yokes 31<1>, 32<1> to descend to their initial position, at which time the weights engaged are lifted from the stirrups 31, 32. The action is repeated as additional load is applied until all the weights are removed from the stirrups and rest upon the plate. In a modification, Fig. 4, the weight-plate is divided into two parts 36, 37 and the weight-carrying beams are arranged in the same vertical plane and are so disposed that weights are lifted by the outside and inside edges of the plates 36, 37. Th pendulous-lever is connected to a plate 46 resting upon knife-edges on the projections 34 of the last two weights to be raised. At no-load, a knife-edge 50 on the frame 6 engages a knife-edge 48 on the plate 46. The units of the load are indicated as in the parent Specification upon a chart graduated in two different colours. The major denominations of the load, and the colour of the graduation to be read on the chart, are indicated on a scale 29 that is connected to the goods plate and co-operates with a pointer 30 connected to the frame 6.
Patent GB-943931-A (GB)
Title: Improvements in or relating to slideways
IPC: B23Q1/26
Filed: 1961-03-03
Abstract: 943,931. Rectilinear-motion bearings GEORG FISCHER A.G. March 3, 1961 [March 5, 1960; Jan. 4, 1961], No. 7916/61. Heading F2A. A machine slideway constitutes a rectilinearmotion bearing which comprises machine members 1 and 2 which are connected for longitudinal movement by a guide rail 3 which is secured to member 1 by a screw or bolt 4. Around the guide rail 3 is located a partly circular bush 5 which is housed within the bore 10 of member 2. The bore of the bush 5 is slightly larger than the circumference of the guide rail and bearing contact is obtained by three surfaces 6, 7 and 8 which extend longitudinally to the bush bore and radially inwards towards the centre 12 of the guide rail. The bush is secured in bore 10 of member 2 by one or more screws 15 which have a cylindrical extension 17 which locates in a suitably provided hole 18 in the bush 5. Other embodiments of this device includes the use of a non-circular section guide bar and a split first member and bush.
Patent GB-630308-A (GB)
Title: Improvements relating to generators of electrical oscillations
IPC: H03K4/28
Filed: 1946-03-14
Abstract: 630,308. Saw-tooth generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 14, 1946, No. 7929. Convention date, March 14, 1945. [Class 40 (vi)] In a saw-tooth generator comprising a valve having two control grids, inductances in the anode and second control grid circuits are so coupled that when the current in the anode circuit rises the voltage of the second control grid falls and the valve blocks. The frequency of the generator is controlled by varying the potential of the first control grid and the linearity of the saw-tooth waveform is improved by varying the conductance of a damping tube connected across one of the inductances. Fig. 1 shows a saw-tooth generator in which the anode circuit of the oscillator valve 10 is coupled to the screen grid circuit by the transformer windings 36, 34. When valve 10 conducts the current in winding 36 and therefore in the deflection coil circuit rises in a substantially linear manner until valve 10 saturates and the consequent fall in voltage applied to the second control electrode 16 causes the valve to block, Fig. 3 (not shown), the frequency of the generator being controlled by the value of resistor 46. When the valve 10 blocks, energy stored in the deflection coil circuit discharging in an oscillatory manner through its distributed capacity causes the potential of the lower end of winding 36 to become negative with respect to the upper end. The damping valve 12 then conducts, the waveform of the current flowing in the winding 36 being dependent on the values of resistors 54, 58 and capacitors 56, 60 and the amount of current flowing being altered by the setting of the linearity control 62. The current flowing through valve 12 diminishes until it is exceeded by the current passing through valve 10 when the above cycle of operation is repeated. Fig. 2 shows that by suitably shaping the damping valve current the net effect of this current and the oscillator valve current is to produce a linear change of current in the deflection coils during the forward stroke of the saw-tooth. The generator may be synchronized by applying synchronizing pulses to the grid circuit of the oscillator valve and a fine control of frequency can be obtained by effecting small changes in the D.C. potential applied to the grid (Fig. 4, not shown). The frequency of operation of the generator may be accurately determined by means of a resonant circuit across the grid to cathode input of the oscillator valve (Fig. 5, not shown), or an even greater degree of accuracy can be ensured by the inclusion of a crystal control in this circuit. In a modification (Fig. 5, not shown), the damping valve is connected across the same transformer winding as that to which the screen grid and cathode of the oscillator valve are connected, the cathode of the damping valve thus operating at or near earth potential. Specification 525,342 is referred to.
Patent GB-1416276-A (GB)
Title: Drive and detent mechanism for dispensing apparatus
IPC: G07F11/68
Filed: 1973-02-19
Abstract: 1416276 Drive and detent mechanism for dispensing apparatus POST OFFICE 19 Feb 1974 [19 Feb 1973] 7969/73 Heading G4V A drive and detent mechanism, particularly for a stamp-vending apparatus, comprises drive means for rotating a first element, pinion 8 and disc 27, from a start position to provide a dispensing action, first coupling means, which includes spring washer 35 which biases bag 30 and integral printer 31, for drivingly coupling the first element to a second element, reset arm 33, adjustment means for adjusting the relative position of the first and second elements about their axes of rotation, second coupling means, ratchet lever 40 and teeth 39, for drivingly coupling the second element to a third element, index wheel 41, and retaining means, lever 44, actuable by the second element during rotation of the elements to lockingly engage the third element and thereby limit rotation of the elements from the start position to a predetermined angle governed by the relative disposition about the axis of the first and second elements. Cam 33 can be moved against spring 35 so that lug 30 can be positioned in one of eight notches 29. Operation.-A coin is inserted and comes to rest on lever extension 46. A flap 10 is raised. This rotates gear sector 11 which rotates pinion 12 so that pin 13 engages recess 14 and lifts weight lift arm 15. As this occurs, rack 6 rotates pinion 8, disc 27 and reset cam 33. Pawl 40 rides freely over teeth 39. Also linkage (18), Fig. 5 (not shown), is moved so as to pivot lever 19 in guideway 21. The lever contacts the coin on lever 46 and causes lever 44 to pivot about pivot 45 to disengage latch portion 43 from index wheel 41. Also linkage (18) pivots lever 49 out of engagement with index wheel 41.  The drive mechanism is then free to rotate. Weight 5 falls and rack 8 rotates pinion 8, the indexing disc 27 and reset cam 33. In addition, pawl 40 engages teeth 39 so the rotation of pinion 8 is transmitted to wheel 41 and the main drive spindle 23. At a stage of rotation of the drive mechanism determined by the relative disposition of the reset cam 33 to the indexing disc 27, a reset land 55 contacts a roller 56 on lever 47 and thereby pivots lever 44 so that latch portion 43 engages wheel 41 to lock the drive mechanism against further rotation.
Patent GB-195383-A (GB)
Title: Improvements in liquid filled compasses
IPC: G01C17/00
Filed: 1923-03-20
Abstract: 195,383. Bergmann, E. G. March 24, 1922, [Convention date]. Magnetic compasses.-In a liquid-filled compass of the type in which upper and lower compartments are separated by a partition formed with at least one depressed portion perforated so that on inverting the instrument, air bubbles escape to be retained beneath the partition, a plurality of ports or perforations 3 is provided in the depressed portion or portions 2. The partition 1 is retained between sleeves 7 and 11, and a packing ring 6 is slipped around the upper edge of the sleeve 7 to support a glass cover 10. A second glass cover 12 carrying an arrow or like indicating mark 13 is rotatable in relation to the cover 10. A screwed sleeve 9 holds the covers in position. The liquid is admitted through a stoppered opening in the side wall or in the knob 14 of a carrying bail 15.
Patent GB-453775-A (GB)
Title: Improvements in or connected with the gates of railway level crossings and the like
IPC: B61L29/02
Filed: 1935-03-15
Abstract: 453,775. Operating gates, fastenings, and railway signals. KING, J. W., 84, Church Road, Ponders End, Middlesex. March 15, 1935, No. 7995. [Classes 44 and 65 (i)] [See also Group XXX] Level-crossing or like gates X, Y, not connected to a signal-box or the like, are interconnected, for operation by moving one of them, by cranks E, F and rods G. Latches A of the gates are also interconnected by rods connected to cranks B on a rock-shaft D. A detonator-placing apparatus K, or any other form of signal, is provided on each side of the crossing and operated by a pull-rod H attached to crank F, the rod being connected to the apparatus K or the signal through a spring I and lever J so that the lever is moved to give the signal during the first part of the stroke of rod H, the spring I being compressed during the remainder of the stroke.
Patent GB-887007-A (GB)
Title: New a-nor-steroid compounds
Inventor: CAMERINO BRUNO
IPC: C07J75/00
Filed: 1959-03-09
Abstract: The invention comprises A-nor-androstanes of the general formula <FORM:0887007/IV (b)/1> wherein R represents O or (H)OR1, R1 represents hydrogen or the alkanoyl radical of a carboxylic acid containing not more than 9 carbon atoms such as a formyl, acetyl, propionyl, butyryl, valeryl, hexanoyl, b -cyclopentylpropionyl or cyclohexylacetyl radical, or an aromatic acyl radical such as a benzoyl, toluyl or b -phenylpropionyl radical, and X represents O, (OH)COOH, (OH)COOCH3, or (OH)CH2OH, and the preparation thereof by subjecting 4-hydroxy-testosterone 17-acetate to an inorganic base-catalysed rearrangement to form A-nor-androstane-3,17b -diol-3-carboxylic acid and either oxidising this compound with sodium bismuthate at about room temperature to form A-nor-androstane-17b -ol-3-one or esterifying this compound preferably with diazomethane to form methyl - A - nor - androstane - 3, 17b  - diol - 3 - carboxylate, reducing the 3-carboxylate preferably with lithium aluminium hydride to form 3 - methylol - A - nor - androstane - 3, 17b  - diol, oxidising this compound preferably with periodic acid to form A-nor-androstane-17b -ol-3-one and either esterifying this compound as required or oxidising this compound preferably with chromic acid to form A-nor-androstane-3,17-dione. Detailed examples are given.  The Provisional Specification also refers to the treatment of A-nor-androstane-17b -ol-3-one 17-acetate with a Grignard reagent of the formula R-Mg-X, wherein R represents a lower saturated or unsaturated aliphatic radical such as a methyl, ethyl, propyl, ethynyl or allyl radical, and X represents bromine or iodine, to form a 3-alkyl(alkenyl or alkynyl)-A-nor-androstane-3,17b -diol which may then be either acylated to form the corresponding 17-acylate or oxidised with chromic acid or by the Oppenauer method to form 3-alkyl (alkenyl or alkynyl)-A-nor-androstane-3-ol-17-one. Detailed examples are given.
Patent GB-197793-A (GB)
Title: Improvements in engine starters
IPC: F02N15/06
Filed: 1922-03-20
Abstract: 197,793. Rogers, F. H., (Eclipse Machine Co.). March 20, 1922. Turning-gear.-An engine starter comprises a rotatable member ou u-hicli a driving member is mounbed for axial movement thereof and rotation therewith, and means arranged for axial and rotary movement to actuate the driving member and to cause it to rotate relatively to such means whenever its axial is arrested. In the form shown, the driving member is a smoothbored pinion 11 and is moved axially into mesh with an engine gear, and then driven, by a nut 17 mnunted on a screw-threaded part 8 of the rotat. able sleeve 9. The pinion 11 and nut 17 are formed with end discs 14, 18 held apart by a spring 24 and having corresponding cam faces 16, 20. If the teeth of the pinion clash with those of the engine gear, the axial movement of the nut 17 continues and the pinion is slightly rotated, by the engagement of the cam faces 16, 20, until it can mesh with the engine gear. At the end of the axial movement, the pinion is arrested by a stop 10 on the sleeve 9 and is driven from the nut through the cam faces 16, 20. The parts are normally retained in the position shown by a spring 13 between the stop 10 and a sliding collar 12, and the parts are stopped suddenly on their return by the engagement of a notch 28 by a tooth 27 on a shell 21 enclosing the discs 14, 18. The sleeve 8, is driven from the armature shaft 2 of an electric motor 1 through a spring 5. The energy initially stored in the spring by the rotation of the motor may be given up more slowly by arranging the coils of the spring in frictional contact with each other. Specifiactions 20811/14 and 175,779 are referred to.
Patent GB-535568-A (GB)
Title: Improvements in and relating to hydraulic jacks
IPC: B66F3/30
Filed: 1940-05-06
Abstract: 535,568. Hydraulic jacks. LOGETTE, A. I., and STEAD, A. H. May 6, 1940, No. 8098. [Class 78 (iii)] Hydraulic jacks forming portable units of the kind in which the motive fluid is stored in the jack casing and in which one or more vents in the cylinder wall are uncovered to return excess liquid to the reservoir when the piston reaches its limit of elevation, are fitted with non- return valves between the vents and the reservoir, thus preventing leakage from the reservoir through the vents to the upper side of the piston, for example when the jack is stored in a recumbent position. Fig. 2 shows a ring of vents 8 communicating with an annular gallery enlarged at one point to house a ball valve 11 which is opened against the pressure of the spring 11a to allow liquid from the gallery to pass to the reservoir through the duct 14. In a modification, the gallery is omitted ; a single vent communicating directly with the valve housing. A cross-pin passed through holes in the pillar fixes the jack in any one of a series of extended positions.
Patent GB-871220-A (GB)
Title: Process for the production of d. l-ª--azido-caprolactam and d. l-ª--amino-caprolactam
Filed: 1958-03-14
Abstract: The invention comprises (1) D.L-a -azido-caprolactam and (2) the preparation of the former compound and also of D.L.-a -amino-caprolactam by treating caprolactam first with between 1 and 3 molar proportions of phosphorus oxychloride, then pari passu with between 1 and 1/3 molar proportion of phosphorus pentachloride and finally treating the caprolactim chloride so formed with at least two molar proportions of sulphuryl chloride, initially at a temperature below 10 DEG C. and then heating to a temperature in the range 35 DEG C. to 50 DEG C., decomposing the a  : a -dichloro-caprolactim chloride obtained with water, reacting the a  : a -dichloro-caprolactam obtained with catalytically activated hydrogen in the presence of one mol. of an inorganic or organic base, reacting the D.L-a -chloro-caprolactam obtained in a mixture of water and a neutral, water-mixible solvent at a temperature of between 50 DEG C. and 120 DEG C. with a salt of hydrazoic acid to give D.L-a -azido-caprolactam and, if desired, reacting the latter compound with catalytically activated hydrogen to give D.L-a -amino caprolactam.
Patent GB-779151-A (GB)
Title: Improvements in or relating to selecting arrangements
Inventor: HEATHCOTE ALAN
IPC: H04Q3/42
Filed: 1954-03-20
Abstract: 779,151. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Feb. 28, 1955 [March 20, 1954], No. 8202/54. Class 40 (4). [Also in Group XL (c)] Apparatus for selecting one out of a number of calling positions comprises a plurality of orders of circuit elements HG1 ... HGr ... HGm each comprising static electrical circuit elements, e.g. 1.2 so arranged that in the absence of a marking on an associated lead G1.2 a pulse applied to that element causes a pulse to be applied to the succeeding element 1.3 (not shown) whereas if a marking is present on that lead application of a pulse to the element 1.2 causes a pulse to be applied over lead B1.2 to the first element of a group of elements associated with 1.2 in a succeeding order. Thus in a typical case where selection is to be made from among 300 positions and three orders are used (i.e. r=2, m=3) the first order might contain 3 circuit elements, each of which is associated with 10 second order circuit elements, each of which in turn is associated with 10 third order circuit elements, i.e. there are 300 third order elements altogether. Each circuit element comprises two gas tubes VKS, VKR, the trigger of the latter being normally positively biased, so that on the application of a pulse to the triggers of both tubes, VKR fires and passes a pulse from its cathode to the triggers of the next pair. If, however, a positive marking is applied to the marking lead G1.2 VKR is biased off on its cathode and VKS is primed so that when a pulse is received VKS fires to pass a pulse over lead B1.2 to the first pair of the next order. Thus, if leads G1.2, Gr.2, Gm.2 are marked and a pulse applied to circuit 1.1, a pulse will eventually be applied to lead Bm.2. In operation all circuits, such as that at the bottom of Fig. 2, when balling for connection have a pulse applied over lead 10 to fire tube VK15. Tube VK14 follows to fire VK12 in the common start circuit. Tube VK15 also primes VKm. After a short delay VK12 fires VK11 and VK13 follows to pulse all marking tubes VKm. That tube which is primed fires and marking tubes VKr, VK1 follow. The potentials of leads G1.2, Gr.2, Gm.2 are thus raised. After a further short delay VK11 fires VK10 which pulses the circuit 1.1 after which a calling circuit is marked over lead Bm.2 as previously described. The arrangement has advantage over a simple chain of 300 such circuits in that total power consumed is less, time is saved in effecting the selection, and that the lives of the tubes, which are used less frequently, are increased. It may be used to select one of a number of registers calling for a, translator.
Patent GB-577961-A (GB)
Title: Improvements in or relating to instruments for the comparison of frequencies
IPC: G01R23/02
Filed: 1944-05-03
Abstract: 577,961. Frequency measurements. STANDARD TELEPHONES & CABLES, Ltd., and DUNN, R. H. May 3, 1944, No. 8333. [Class 37] A circuit arrangement for the comparison of two frequencies comprises a gas-discharge tube arranged to be fired at the one frequency and quenched at the other frequency. As shown, contacts SA are changed over at a standard frequency and contacts SB are closed at the frequency to be compared therewith. Contacts SA have equal operate and release times, and apply alternately to the main anodes of cold-cathode gas discharge tubes VA, VB a potential of the form shown at (a), (b), Fig. 2. Contacts SB close momentarily only to charge up condensers QA, QB through resistances RA, RB respectively. These condensers discharge through shunts RC, RD on opening of contacts SB. The complete charge and discharge time of the condensers QA, QB is small compared with the periodic time of the standard frequency, the voltage drops across RA, RB which are applied to the auxiliary anodes of the tubes VA, VB over resistances RE, RF, being of the form shown at (c), (f), Fig. 2. The tube VA or VB which is connected to the positive supply over contact SA fires when its auxiliary anode is energized and remains operative until the main anode voltage is removed by change over of contacts SA. The anode current pulses in each tube VA, VB will thus be of the form shown at (d), (g), Fig. 2, and actuate a direct current meter M in series therewith according to the duration of these pulses. With contacts SB running slow the deflection of meter M jumps to a maximum and dies away gradually to zero where it jumps again to a maximum as at (e). Fig. 2. With SB running fast the deflection increases steadily and drops quickly to zero. The rate of swing of the meter indicates the frequency difference and the shape of the deflection curve indicates fast or slow. At synchronism the meter indicator is stationary. In the arrangement shown successive deflections of the meter M are produced by the averaged anode current through VA and VB alternately. One of these discharge tubes may be dispensed with, however, in which case contacts SA will be opened momentarily only at the end of each standard frequency cycle.
Patent GB-454998-A (GB)
Title: Method for the production of the contours in the drawing to be transferred by photogravure upon the intaglio cylinders or plates
IPC: G03F5/20
Filed: 1936-03-20
Abstract: 454,998. Photo-mechanical printing- surfaces. HINTSCHES, K., Oberkotzau, Bavaria, Germany. March 20, 1936, No. 8364. Convention date, Aug. 3, 1935. [Class 98 (ii)] Contours are provided round the screened areas of intaglio plates or cylinders for printing on cloth and similar material, by preparing a photographic plate or film on which the screened areas are copied, producing a negative therefrom and cutting the contours in the emulsion layer of this negative with known graving tools under a magnifying glass.
Patent GB-634057-A (GB)
Title: Improvements in machinery guards
IPC: F16P1/02
Filed: 1948-03-23
Abstract: 634,057. Machinery guards. WALKER, H., PARR, H., and SMITH, W. H., (trading as WALKER & CO., T.). March 23, 1948, No. 8489. [Class 80 (iv)] A guard for a band saw comprises a pair of transparent panels A hinged on vertical. rods b and connected together by pivoted links a<1>. The panels are normally held apart against a stop a<2> on the bar b<1> by the action of a spring a<3>, thus allowing an unimpaired view of the saw, but they may be closed upon pressure of the operator's hands. The rods bare adjustably locked in a bracket b<2> by screws b<3>, the bracket carrying in a slot b<4> a rod b5 which engages a bore in the machine head. A head shield is also provided.