baber/WOPTO huggingface dataset:
Patent GB-568143-A (GB)
Title: Improvements relating to cold forging machines
IPC: B21K1/44
Filed: 1943-09-14
Abstract: 568,143. Forging bolts, rivets, &c. NEWTON & CO., Ltd., L. H., and HANDS, W. E. Sept. 14, 1943, No. 15063. [Classes 83 (ii) and 83 (iv)] Forging - dies; punching.-A cold forging machine for heading bolts, rivets, &c. has a transverse slide on the heading slide carrying one or more heading punches and a hollow tool that forms the circular upset head into polygonal form and through which the finished blank is ejected. Wire 11 is fed to the machine by geared rollers 13 driven intermittently by a ratchet and pawl on a lever 17 linked at 20 to a crankpin on a disc 22 on the end of a cam-shaft v geared to the main crank-shaft p of the press. A crank-pin 29 is linked at 30 to a slide 26 having a cam groove 27 engaging a pin 28, Fig. 4, on a transverse slide 24 carrying a cutter 23 that cuts off a blank and by aid of a spring finger 31 transfers it to a die e into which it is pushed by the advance of the first heading punch k<1>, Fig. 5, backed up by an abutment 39 and adjusting wedge 38, and fitted with an ejector 40. The die e, Fig. 7, is reversible, is recessed to form a collar o beneath the head, and the forms of recess on the two ends may differ.. After the first stroke of the heading slide m by the crank q, a cam x acts through levers 2, 3 on a rock-shaft to shift the transverse slide j to bring a second heading punch k2, double-ended and reversible, into position to complete the head at the next stroke, after which a further shift brings the hollow blanking die k<3> into position to cut the head to polygonal form, the ejector rod h, that serves as an abutment during heading, being operated by a lever 10 linked at 9 to a cam-operated bell-crank 6, to force the blank through the die to be discharged at 4 to a delivery tube 5.
Patent GB-480775-A (GB)
Title: Improvements in processes for rendering wool materials unshrinkable
IPC: D06M23/00
Filed: 1936-05-29
Abstract: The tendency of wool to felt is reduced by treating with a reactive sulphur compound, other than sulphuryl chloride, which is acid or capable of liberating sulphuric or hydrochloric acid on hydrolysis with water.  The sulphur compound may be used in vapour form or dissolved or dispersed in an inert organic solvent. Suitable sulphur compounds are chlorosulphonic acid, thionyl chloride, sulphur trioxide, oleum, sulphur mono- and dichlorides, separately or mixed. In an example, air dried knitted wool fabric is steeped for 1 hr. at 40 DEG  C. in a mixture of ether and fuming sulphonic acid containing free sulphur trioxide, the ether is then removed by vaporizing, the wool washed, treated with dilute ammonia and dried.  Specification 464,503 is referred to.
Patent GB-844054-A (GB)
Title: A method of making-up lined tubular articles of wearing apparel
IPC: A41D1/089
Filed: 1957-05-14
Abstract: 844,054. Shorts &c. DAVEY, W. May 14, 1957 [May 16, 1956], No. 15190/56. Class 141 In making a pair of lined shorts, rear body and lining blanks 1, 6 are stitched together along their upper and lower edges RT, RB to form a tube while front body and lining blanks 9, 14 are stitched together only along their lower edges FB; the tubular rear part is then placed between the front blanks as shown in Fig. 8 and the body blanks 1, 9 and lining blanks 6, 14 are stitched together along their side edges as in Fig. 6, and the front blanks 9, 14 are connected along their upper edges 9a, 14a to form an outer tube; finally the assembly is turned right side out, Fig. 10, by means of the fly opening F in the outer tube. The bottom edges RB, FB are each in two parts separated by an inverted V-shaped gap, the corresponding edge of the V being stitched when the side edges of the blanks are stitched. Fig. 6. A pocket 17 is inserted in the side seams connecting the body blanks 1, 9 and folded over on to the blank 9, its upper edge 17c being included in the stitching of the edges 9a, 14a.
Patent GB-662189-A (GB)
Title: Improvements in or relating to buttonhole stitching machines
IPC: D05B3/06
Filed: 1949-06-08
Abstract: 662,189. Snap-action switches. NOYES, R. C. (Reece, F. A.). June 8, 1949. No. 15274/49. Class 38 (v). [Also in Group VII] A two-way switch for actuation by moving parts of a sewing-machine comprises two parallel contact knives 271 pivoted at 273 for engagement with contacts 274, 275 and 276, 277 respectively and having an arm 270 loosely supporting a yoke 268 which forms a toggle with an arm 267 of a member 266 pivoted at 266a; the yoke is pressed upwards by a spring surrounding it and bearing on the arm 270. A spring arm 261 with a roller 262 for engagement by cams or other members of the machine is fixed to the switch casing and carries a pawl 263, biassed to the vertical position, which engages notches 265 in the member 266, moving from one notch to the other when the arm 261 rises after each actuation, so that depression of the arm reverses the switch from whichever position it is in by throwing the toggle 267, 268 to the opposite side of the arm 270 so that the spring pushes, the arm 270 over.
Patent GB-308117-A (GB)
Title: Improvements in the production of compound sheets or plates of non-splintering or safety glass
IPC: B32B17/08
Filed: 1928-05-25
Abstract: 308,117. Thornton, J. E. May 25,1928. Compound transparent sheets; ornamental plates. -A non-splintering transparent sheet is made by joining two compound sheets each consisting of a sheet of glass A, a strongly adherent substratum B, and a sheet of cellulose acetate C. The cellulose acetate surfaces are softened by a suitable solvent and are united in a suitably padded press. The substratum B is applied as a thin solution of gelatine. &c. and cellulose acetate in one or more common solvents, such as acetic or glacial acetic acid, and diluted with a suitably miscible spirit such as acetone, a few drops of a hardening solution, such as chromealum or formalin, and if desired a few drops of glycerine, being added. The glass is cleaned and if necessary roughened with hydrofluoric acid or sodium silicate and the above solution, when filtered, is applied in a layer about 0.0001 inch thick. When dry, a cellulose acetate sheet C is applied to the substratum either as a solution which is allowed to dry or as a formed sheet which has applied thereto a substratum as applied to the glass. The edges of the sheets may have a bevelled groove which is filled with paste or may be sealed by dipping in a, trough of suitable solution such as gelatine and cellulose dissolved in acetic acid and acetone. The coatings may be applied by similar apparatus to that used for coating photographic plates or by slotted troughs and the thickness may be regulated by scrapers. Suitable dyes &c., to form pictures or designs may be applied to the substratum or the cellulose surface.
Patent GB-612250-A (GB)
Title: Pulse-signal generator
IPC: H03F3/54
Filed: 1946-05-21
Abstract: 612,250. Valve pulse generating circuits. HAZELTINE CORPORATION. May 21, 1946, No. 15407. Convention date, June 6, 1945. [Class 40 (vi)] A pulse-modulated transmitter for a radar or direction-finding system which produces pulses of a predetermined duration, comprises an oscillation generator normally maintained in a non-conductive condition, means for supplying to the generator a control signal which initiates and maintains it in an oscillatory condition and a time-delay circuit which in response to the initiation of the oscillation, produces a potential which cuts off the initiating signal applied to the generator and renders it non-oscillatory at a predetermined time interval after the commencement of the oscillations, thus producing a pulse-modulated oscillation having a duration equal to this time interval. In the Figure, when a synchronizing pulse is applied at terminal 35, the amplifying valve 37 is rendered conducting and the blocking oscillator valve 25 is triggered by a pulse derived from the coupled windings 26a and 26b of transformer 26 producing a pulse in its output circuit, which is adjusted to be of longer duration than the pulse signal that the transmitter is required to generate. Amplifying valve 30 conducts and produces a positive pulse between the anode and cathode of the oscillator valve 10 which is rendered conducting after a short time interval to initiate oscillations of a frequency dependent on the tuned circuit 11, 12 in the aerial circuit 51 and in the coupled winding 41. The signal across winding 41 is rectified and the resultant positive pulse appears after a time interval dependent on the constants of the network 42, 43 across the resistor 44 which is chosen to terminate correctly the delay line. Valve 45 conducts and terminates the pulse from blocking oscillator valve 25 which will thus terminate the oscillations in oscillator valve 10. The duration of the oscillations produced by the transmitter will thus depend only on the delay in the network 42, 43, Fig. 2 (not shown). In a modification, Fig. 3 (not shown), the rectification in the grid circuit of the oscillator valve is used in place of the rectifier 40 of Fig. 1 to derive a negative pulse which is amplified in a single stage before being applied to the delay line circuit.
Patent GB-446140-A (GB)
Title: Improvements in or relating to switches more especially for electrically operated hand tools
IPC: H01H9/06
Filed: 1935-05-28
Abstract: 446,140. Snap-action switches; actuating controllers. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Bosch Akt.- Ges., R. ; 4, Militõrstrasse, Stuttgart, Germany) May 28, 1935, No. 15474. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 30, 1935.] [Classes 38 (iii) and 38 (v)] A switch mounted in the handle of an electrically operated tool such as a drill comprises an operating lever 17, a longitudinally movable rod 3 operated through snap-action mechanism by movement of the lever 17 and a contact carrying member 4 which is carried by the rod 3 and may be rotated into one of two selected positions by movement of a lever 8. The rod 3 passes through a partition 1a which separates the mechanical and electrical parts of the switch. The lever 17 carries a fork 22 which embraces the axle 19 of two rollers on a spring-link 12 that pivots about a fixed axis 13. The rollers run along a fixed surface 16a, Fig. 10, having a hump 16b which is reached by the rollers at the point of maximum compression of the spring 14 of the spring link, so that an additional kick is given to the snapaction. The rocker 12 moves in a recess 3b on the rod 3 moving the latter rapidly by engaging an end of the recess. Premature movement is prevented by a ball 20. In the form shown, adapted to control the motor of a drill, the member 4 carries a circle of six contact studs 4a ... f, three of which are adapted to engage three pairs of fixed contacts 11 on a base 26 when the rod 3 is moved downwards by operation of the handle 17. Before this movement is made, the member 4 may be moved into one of two positions by operation of the lever 8 which carries an arm 9, a slot in which is engaged by a stud 10 on a disc 5 connected to the member 4 by a pin 6 so as to allow longitudinal but not rotary relative movement between the members 4, 5. This selects the three contacts 4a ... f, which will come opposite the contacts 11 and engage them when the rod 3 is moved downwards. The three-phase motor is thus caused to rotate one way or the other as will be seen from Fig. 6. The arm 9 is sector-shaped and adapted to engage a notch 3d in the rod 3 preventing movement of the latter if the lever 8 is in an intermediate position between its two end positions. Movement of the lever 8 is similarly prevented when the rod 3 is in its lower position.
Patent GB-111690-A (GB)
Title: Improvements in or relating to Buffer and other Springs Constructed with India-rubber.
Inventor: SPENCER ALFRED GEORGE
IPC: F16F1/40
Filed: 1916-10-31
Abstract: 111,690. Spencer, A. G., and Hine, C. W. C. Oct. 31, 1916. Addition to 107,808. India-rubber springs.-The various forms of grooves b on the metal plates a as described in the parent Specification are continued either wholly or partly over those portions of the plates not covered by the rubber rings c. The metal plates moulded into the rubber rings may have the usual holes for anchoring the rubber.
Patent GB-736375-A (GB)
Title: A method of preparing halogen-substituted aliphatic hydrocarbons
IPC: C07C17/02
Filed: 1953-06-05
Abstract: Halogen substituted derivatives of acetylene, alkylacetylene or vinyl acetylene are obtained by introducing the acetylene compound into a solution which contains cupric halide and the corresponding hydrogen halide.  The reaction may be effected in aqueous hydrogen halide containing free halogen as an impurity under a pressure of 100 mms. up to 300 lbs./square inch of mercury above atmospheric. The process may be effected in two reaction vessels, carrying out in one reaction vessel the continuous formation of dihaloethylene, pumping the cuprous halide solution formed to a second reaction vessel where it is oxidized to the cupric salt and recycled to the first vessel.  An alternative discontinuous method of operation may also be utilized. Examples disclose the production of trans-1,2-dichloro, dibromo- and diiodo-ethylene.  Specification 384,654 is referred to.
Patent GB-1087296-A (GB)
Title: An improved door for fireplaces, back boilers or stoves
IPC: F24C15/04
Filed: 1964-09-25
Abstract: 1,087,296. Fireplace door. J. L. DAVIES. Sept. 25, 1964, No. 15715/67. Divided out of 1,087,294. Heading F4W. A door for a fireplace or stove comprises spaced-apart heat-resistant glass panels 15, 16 supported by slotted gaskets 17 in a frame 4. Air enters through the slot 18 in the lower gasket 17 and issues from a slot 18 in the upper gasket. The inner panel 16 is formed from vertical strips so spaced that they contact at their vertical edges when the door is heated.
Patent GB-276772-A (GB)
Title: Improvements in rangefinders
IPC: G01C3/02
Filed: 1926-06-23
Abstract: 276,772. Barr & Stroud, Ltd., and French, J. W. June 23, 1926. Range-finders.-The deviating prism 7 of a coincidence type range-finder is operated from a nut 3 engaging a screw A of variable pitch. The pitch may be arranged so that the rotation of the screw is proportional to the range, or to the logarithm of the range. In one example, Fig. 1, a roller 5 is carried in the nut 3 and is pivoted so that it adjusts itself to the varying pitch angle. and in another example a roller 12 is mounted in the nut and engages a square-threaded screw. The screw A may also be mounted in a stationary nut at one end the thread of which may be uniform or variable in pitch, thus providing a movement of translation to the screw A.
Patent GB-736254-A (GB)
Title: Improvements relating to beams or girders
IPC: E21D17/01
Filed: 1953-06-09
Abstract: 736,254. Girders, particularly for supporting mine roofs. REPPEL, W. June 9, 1953, No. 15870/53. Class 20 (2). An I-section beam, more particularly for supporting mine roofs, has a web 1 which undulates in the longitudinal direction and has strengthening ribs 2 the same height as the web. Two beams are connected by end 4 to jaw 3 as described in Specification 729,171.
Patent GB-296077-A (GB)
Title: Improvements relating to apparatus for rectifying alternating currents
IPC: H01L25/07
Filed: 1928-05-31
Abstract: 296,077. Westinghouse Brake &. Saxby Signal Co., Ltd., (Assignees of Geiger, P. H.). Aug. 25, 1927, [Convention date]. Contacting-solid resistances. - Rectifiers comprising a number of copper discs 1 having cuprous oxide coatings 2 and assembled with conducting spacing elements B on an insulated bolt E are provided with heatradiating fins D and housed in a casing H of a material of good heat - conducting and radiating properties the side walls of which are in close thermal contact with the radiating fins, being electrically insulated therefrom only by thin sheets of mica 7, 8 of large surface area. The casing is sealed to a base K if a waterproof construction is desired; alternatively it is perforated to permit free circulation of air.
Patent GB-265847-A (GB)
Title: Improvements in or relating to refractory articles or castings
IPC: B28B1/54
Filed: 1926-06-25
Abstract: 265,847. Haddan, R., (Corning Glass Works). June 25, 1926. Drawings to Specification. Refractory substances. - Refractory articles composed of crystals embedded in a glassy matrix are obtained by fusing suitable substances, casting, and annealing. As raw materials, pure alumina, magnesia, zirconia, &c. may be used. Mixtures of kaolin with diaspore clay or bauxite are particularly suitable. The materials are fused in an electric furnace and cast in iron or sand moulds. Three methods of annealing are described, viz :-(1) small articles cast in iron moulds are removed from the mould when sufficiently set to permit handling and transferred to a kiln which is maintained at the annealing temperature for a few hours and is then slowly cooled. (2) larger articles cast in sand moulds are removed from the mould, covered with insulating powder and allowed to cool. (3) the mould containing the casting is covered with insulating powder and allowed to cool. Hollow articles may be obtained by allowing the material partially to solidify in an iron mould, and pouring out the remaining molten material.
Patent GB-443706-A (GB)
Title: Improvements in and relating to the production or manufacture of threads or filaments of artificial silk and the like
IPC: D01D5/00
Filed: 1934-05-29
Abstract: <PICT:0443706/IV/1> Artificial filaments or the like of cellulose or cellulose derivatives are obtained by applying a cellulosic solution to a knife or equivalent fine edge, effecting solidification at least to the stage where it is capable of being withdrawn in a coherent condition, and withdrawing the filament thus formed.  The edge may be a thin wire.  In the case of a knife edge, a rotating member such as a disc may provide the support for the knife edge which may receive the cellulosic solution by contact with a rotating roller dipping into the solution, or the knife edge itself may dip into the solution.  The cellulosic solution may be solidified by means of a liquid coagulant or by means of heat.  Sulphuric acid or caustic soda are specified coagulants.  Filaments may be taken from a knife-edge disc under stretching tension.  A tension roller may run in coagulant or be continuously supplied with powder to prevent adhesion of the thread which may pass twice round the roller, a spacing guide being provided, and it may pass to another roller rotating at a greater speed.  The filament may have powder applied to it between the two rollers.  The filament may be removed from the disc without stretching.  Instead of a knife-edged disc, a fine edged ribbon may be used.  When using a fine wire, it is coated with solution and coagulant applied by immersion, spraying, or contact with a moistened roller.  When sufficiently solidified, the coating is divided or split and removed from the wire with or without tension.  As an alternative the knife-edge or equivalent may first have coagulant applied to it and then be brought in contact with cellulosic solution. Solutions of cellulose acetate, nitrate, xanthate, or cuprammonium solutions of cellulose, with or without rubber latex or other additions may be used.  The filaments may be used for making artificial silk fabric, cloth, or lace.  As shown, cellulosic solution in trough 5 is taken up by roller 4 and deposited on the knife-edge of disc 1.  The thin layer of liquid is carried by the disc into a trough 3 containing coagulating liquid and the coagulated filament is removed from the disc and passed over or round wheel 7 to a winding device.  The thickness of solution taken up by roller 4 is regulated by a doctor-roller 6.  The Provisional Specification refers to Specification 442,935, [Group V].
Patent GB-329845-A (GB)
Title: Improvements in or relating to hydraulic accumulators
IPC: F15B1/027
Filed: 1929-05-24
Abstract: 329,845. Wellman Seaver Rolling Mill Co., Ltd., and Smith, S. May 24, 1929. Accumulators.-In an air-loaded accumulator, the accumulator pressure determines whether or not the pump is bye-passed. When the accumulator is filled to its highest level, the pressure therein acts through a loaded plunger 38 and linkwork to depress a valve 32 to place pipes 42, 43 in communication; liquid then acts on a piston 20 and raises a bye-pass valve 19. When the pressure falls, the valve 32 is returned to the position shown, in which the pipe 43 is connected to an exhaust pipe 44, and the bye-pass valve is closed by springs. A pipe 16 leads to hydraulic machinery, and a shut-off valve 24, normally held open by pressure on a loaded plunger 26, closes when the pressure falls to its minimum value.
Patent GB-165090-A (GB)
Title: Improvements in or relating to rim nuts and dust caps for tyre valves
IPC: B60C29/06
Filed: 1921-06-10
Abstract: 165,090. Schrader's Son, Inc., A., (Assignees of Schweinert, M. C.). June 21, 1920, [Convention date]. Dust caps for tyre valves.- To enable a single size of dust-cap to be used with different sized tyre valve casings, the cap is made of such a size as to permit it being screwed in each case to a bushing attached to the valve. The Figures show the bushes formed integrally with a rim nut made from sheet metal by drawing and rolling operations. The bush F to be used with the smaller valve has a reduced portion provided with threads to engage the valve casing A, while the bush G for use with the larger valve has the threads formed on a straight extension. To enable leather of commercial thickness to be used for the washer K the bottom of the nut is pressed up to form a seat M.
Patent GB-755729-A (GB)
Title: Wire twisting tool
Inventor: VINCE REGINALD THOMAS
IPC: B21F15/04
Filed: 1953-06-11
Abstract: 755,729. Twisting wires together. ROLLS-ROYCE, Ltd. June 11, 1954 [June 11, 1953], No. 16170/53. Class 83 (4). A hand tool for twisting together two ends of wire comprises a chuck member to grip the ends of the wire and means to rotate the chuck which comprise a helically-grooved member and a second member movable axially relative to the first member and having means co-operating with said groove, whereby relative axial movement in one sense causes rotation of the chuck, ratchet means being provided whereby relative axial movement in the other sense does not rotate the chuck. A shaft 10, helically grooved at 11 and carrying a chuck 31 at one end, is rotatable, and slidable to a limited extent, in a casing 13. A sleeve 12, slidable in the casing 13 over the shaft 10, carries loosely on a plug 21, an anular driving member 22 having an internal projection 23 (not shown) engaging the groove 11. The chuck comprises a sleeve 31, secured to the shaft 10, tapered, cut-away at 38, and slotted at 35, 39 to receive the wires 36, 37 to be twisted, and a member 33, formed with a blade 42, slidable in the sleeve 31 to clamp the wires thereagainst. The blade 42 is tapered longitudinally and tapered or, Fig. 6, stepped, transversely. In operation the casing 13 is first pulled by finger grips 50 towards the handle end 17 of the sleeve 12, the lower end of which abuts the top of the chuck 31, so that a flange 45 on the casing 13 engages a pin 48 on the member 33 to move it back against a spring 32 in the chuck to allow the wires to be inserted in the chuck openings. The handle 17 is then pulled out from the casing 13 so that first the blade 42 is pushed down by a flange 46 on the casing 13, into the opening 39 of the chuck to grip the wires thereagainst, and then the plug 21 lifts the driving member 22, it being locked against rotation in one direction by a spring-pressed pawl 27, to rotate the shaft 10 and thus the chuck 31 to twist the wires. The handle 17 is then released, whereupon a spring 16 moves the sleeve 12 and thus the driving member 22 back into the casing 13, the pawl 27 allowing rotation of the driving member 22 so that the shaft 11 is not rotated.