Patent GB-125565-A (GB)
Title: Method of and Means for Cutting Tubes.
Inventor: FIELD HENRY FRANCIS
IPC: B23K7/00
Filed: 1918-11-23
Abstract: 125,565. Field, H. F., and Burgoine, S. F. Nov. 23, 1918. Dividing by fusion.-In apparatus for cutting out tubes by the oxy-acetylene flame, the tube is mounted on the end of a spindle below the flame, the spindle being rotated and moved as required.. In the construction shown in Fig. 1, the spindle b is mounted in bearings c and carries at one end the tube e to be cut by the flame at f. At theother end it is fitted with a former or pattern a wording against a tracer d which, may be rotated. The spindle is rotated by a band-wheel h or the. like. 125,719. Bill, J. April 16, 1918. Forging bolts and rivets; dies.-In a machine, for forging electrically heated metal, such as for producing heads on bolts and rivets manufactured in series automatically, an electro-magnet is used to control the operation of the machine and to synchronize the stamping period with the. moment when the metal has become heated to the required degree. As described, the electro-magnet is connected with the transtormer supplying current to the heating electrodes, and when this current reaches a predetermined strength, the magnet operates a clutch device through which the moving parts of the apparatus are driven intermittingly from a continuously driven fly-wheel. The bar 46 to be cut into lengths and headed is fed intermittingly into the machine by feed-rollers 96. 97 driven frictionally by a sector on the face of a disk 90. The bar receives a preliminary heating by passagebetween electrodes 77 connected to the secondary of a transformer 88. The electrodes are opened and closed by an eccentric (not shown), which reciprocates, one electrode. The bar is arrested by a pivoted stop (not shown), which allows a sufficient length to form the head to project beyond the shearing and gripping device. The requisite. length is severed by a knife 62, and i6 gripped and moved transversely by a device 60 reciprocated by cam mechanism, to bring the severed piece in line with the stamping die 33, Fig. 14. The part to be formed by the die receives a final heating by electrodes on pivoted arms 36, 37, connected to the secondary of a transformer 89. The pivoted stop is moved out of the path of the die 33 as the severed piece is being moved transversely. The opening and closing of the electrode arms 36, 37 is controlled by a spring 43 and cams 41. The die 33 is carried by a reciprocating member 32 operated by an eccentric 31 from an internlittingly driven shaft 1. A shaft 35 driven through bevel gear 34, operates the cam &c. movements. A vertically reciprocated slide 48 ejects the finished bolt &c. through an inclined shoot 54. The driven fly-wheel 2 drives a sleeve 3 running loosely on a sha.ft 1, and provided with internal notches 5. The shaft 1 has a recess in which is housed a member 7 serving as a. rocking pawl. A spring 9 causes the member 7 to project from the surface of the shaft 1 and engage one of the notches 5 whereby the shaft 1 is driven. The member 7 has a projection 8 which can be arrested, when required, by a member 23, to rock the member 7 so that it is withdrawn from the notch 5, allowing the sleeve 3 to run idly. The member 23 is urged into the path of the projection by a spring 24, and is withdrawn at the required times by a pinion 21 engaging rack teeth, and operated by a toothed sector 20 on a vertically movable wheel 11 provided with peripheral notches 17. Studs 14 carried round by the sleeve 3 engage the notches 17 and drive the wheel 11 when the latter is lowered. The raising und lowering of the wheel 11 are controlled by an electro-magnet 25 through lever mechanism 27. Adjustment is made so that the electro-magnet operates with a predetermined strength of current. The magnet is in circuit with the transformers supplying current to the electrodes. As the current flowing rises, owing to improved contact between electrodes and bar 46 as the latter softens, or other causes, the current through the magnet rises until the predetermined strength is reached. The adjustments are determined experimentally so that the magnet operates when the bar 46 reaches the required temperature. A brake 16 is provided to control the speed of the machine, and the studs 14 are made individually removable so that the relation between the rotations of the wheel 11 and sleeve 3 may be adjusted. A circuit diagram is given. 125,788. Quasi-Arc Co., and Cole, W. L. May 3, 1918. Uniting by fusion.-In a welded ship construction having frame members. bars, and stiffened without flanges at their base edges, the frames &c. are temporarily held prior to welding by angle lugs and bolts a, d, Fig. 9. or by hook bolts g, Fig. 11, or screwed staples k, Fig. 14. The angle lugs a. may be arranged on both sides of the frames &c. as shown in Fig. 9, with intermittent fillet welds f on one or both sides thereof, as required. In order to prevent these flangeless frames &c. & from sagging or buckling during erection, they are interconnected and spaced by temporary stiffening members consisting of tubes or ferrules m and bolts l, as shown in Fig. 16.