Patent GB-189730509-A (GB)
Title: Improvements in or relating to Slugging Machines.
Inventor: MAXFIELD WILLIAM BESTWICK
Filed: 1897-12-24
Granted: 1899-03-24
Abstract: 30,509. Maxfield, W. B., [Brooks, J. W.]. Dec. 24. Nailing.--Relates to improvements in the nailing-machine described in Specification No. 14,970, A.D. 1896. The spool carrying the wire is mounted on a pin rotating in ball bearings in a bracket 2, Fig. 1, bolted to the head of the machine. When wire of square or like crosssection is employed, the spool may be carried on a horizontal axis. The wire is drawn from the inside of the coil and is passed through a guideeye on the bracket 2 to the feedwheels. The length of the nail is regulated by the apparatus shown in Fig. 1<d>. The feedwheel is rotated by a pair of pawls carried by a rocking arm 11 moved in one direction by a cam and returned by a spring 11<b>. The latter movement is regulated by a cam 7 against which a tail 6 on the bracket strikes, the position of the cam, and the length of the nail, being determined by a spring 9 engaging a graduated grooved wheel 8 made in one with the cam. The wire passes through an adjustable throat 16, Fig. 2, the stem of which is movable in the stationary knife casting. The starting-wedge t<1>, Fig. 1, bears on an adjustable ball-collar 35 on the driving-shaft. The cam E has graduations on its periphery which are brought below an index 14, Fig. 2, to allow various adjustments to be made on the machine. A plate 13 screwed to the face of the cam contains instructions regarding these adjustments. After placing the cam in the necessary position, the ball-collar 35, starting-gear, brake gear, cutting-knives, &c. can be adjusted. The horn post is connected to one end of a balanced lever to the other end of which a rod P is coupled. This rod carries a toothed slide with which a pawl on the slide 26 engages. The latter is coupled to a rod Q jointed to the lever R by which the horn is depressed after a nail has been driven. After the nailing of a shoe is finished, the horn is automatically dropped by the means shown in Fig. 4. When the operator takes his foot off the starting-treadle, the spring T<x> depresses the shipper-rod T and connected parts. The curved lever V<1> falls into the small portion of the cam N, and the catch 41 releases the pawl 42, which falls against the end of the horn-depressing lever R. The cam 45 rocks the lever 43, and the pawl 42 rocks the lever R with the desired result. By moving a hand-lever 39 mounted on an eccentric spindle, the lever V<1> is prevented from falling inwards when the small portion of the cam N comes round. This enables the ball-collar 35 &c. to be adjusted. A guard 17, Fig. 2, having an adjustable guide 19, is pivoted to the standard. When swung up into the operative position, it is secured by a spring bolt. A hinged door or guard 23, Figs. 1 and 3, prevents injury to the operator in the event of any breakage occurring in the machine. When the machine is to be used to quilt a sole, the work is placed on a plate of the form shown in Fig. 5<c>, which rests on the table shown in Fig. 5. The pins 50<a>, 50<b>, which can be raised to the required extent by rack-and-pinion gear, fit in the groove on the underside of the plate. Fig. 6 shows a jack, which can be raised or lowered by rotating a cam 51<e>. The cam is secured in the desired position by a spring bolt. In another form of jack the post is mounted on a horizontal pin and is prevented from swinging too far by lugs engaging a second pin at right-angles to the first. A further form of jack is shown and described capable of a universal movement to and from and round about the guard-plate. All the movable parts are serrated so that they can be locked in the desired positions.