US1472938A - Riveting machine - Google Patents

Description

NOV. 6, 1923.

R. P. RICHARDS RIVETING MACHINE Filed March 13. 1922 fatented Nov. 6, i923.

RUEERT 1. RICHARDS, OF NEWTON-LE-WILLOWS, ENGLAND, ASSIGNOR TO THE VUL-.

CAN FOUNDRY LIMITED, OF NE'WTGN-LE-WILLOWS, LANCASTER, ENGLAND, A

BRITISH COMPANY.

arvn'rrne amounts.

Application filed March 13, 1922. Serial No. 543,353.

To all whom it may concern:

Be it known that I, 'Rurnn'r PEEL RICH-- suns, a subject of'the King of Great Britain, residing at Holly House, Newton-le-Willows, in the county of Lancaster, England, have invented certain new and useful Improvements in or Relating to Riveting Machines, of which the following is a specification. V

This invention relates to riveting ma chines of the type in which two opposed tools are mounted in the opposite ends of a frame, usually of horse shoe or U shape. A riveting machine of this type is described for example in the specification of Patent No. 1,165,851, Gollingwood, December 28, 1915. The chief object of'the present invent-ion 18 to enable the riveter to be used on work where it is diflicult to employ machine riveting by existing machines, as for example in the riveting of stays in the waist of fireboxes having shaped sides and in other conditions where the shape of the bodies being riveted prevents the application of a simple horse shoe or U shaped riveting machine."

According to this invention one of the opposed tools is displaceable in position along the frame leg on which it is mounted. This is preferably effected by making the leg of variable length by means of a sliding leg member carrying the tool, the opposed tools being, as usual, angularly adjustable so that they can with the present longitudinal adjustment operate through a substantial range of angle independent of the angular adjustment ofthe frame as a whole. Thus in riveting the stays of a firebox with shaped sides the leg of the frame inserted in the firebox can be extended to allow the tool carried by this leg to get under the curve of the side, while without such extension it might in many cases be impossible to swing the frame to the desired position owing't'o the obstruction offered by the firebox walls.

In order that the said invention may be clearly understood and readily carried into effect, the same will now be described more fully with reference to the accompanying drawings, in which Figure l is a general view of a horse shoe shaped riveter embodying this invention and shown applied to the riveting of a firebox; and

Figure 2 is a detail sectional view showing the'method of securing the tool carrierin an ad ustable manner to one of the legs.

A is the horse shoe or U shaped frame having a continuous leg a at one side and 'a shortened or broken leg a 0n the other side.

B is the adjustable frame member secured to the leg a to complete it. C, Q arethe tools, the tool C being carried in the end of the leg 61, and the tool C at the end of the frame member B. D is a suspending ring b which the frame is suspended, the shank d of which ring is tapped at the end and mounted on the adjusting screwed rodfd carrying the pulleys (Z over which the chains (Z or other flexible connections pass, allowing the angle of suspension of the riveter to be adjusted as desired by displacing the rod cl relatively to the ring D, as in U frame rlveters at present in use.

The adjustable frame member B carrying the tool C forms an extensible leg end, the

said adjustable member. being connected to the leg (4 by the slotted slide 6 guided in the end of the legend having a rack b on its outer face with which gears the pinion E carried in a bracket 6 on the end of the leg (4 a small pawl e preventing the pinion running back under the weight of the memberiB. The member is locked in adjusted position by the locking bolt F and handle f. v

The frame A is made up, as is usual in this construction ofriveter, of two plates secured by connecting stays and as shown in the detail view, Figure 2, the slotted slide 6 extends between the two plates at the end of the leg a which plates carry the guiding ribs a for the slide. The ribs a and the grooves b in the opposite faces of the slide 7), which grooves receive the ribs. a are preferably made with wedge or sloping sides so that when the locking bolt F is tightened up the wedge surfaces of the ribs and slide grip each other and the slide, with the mem ber B and tool C is held rigidly in the end of the leg M.

The tools C, C are of any known or con enient type and are provided with the al adjustments, the tools being pivoted in their supporting members and adjust c angularly around their pivots by the arms a terminating in a worm o with which engages the worm wheel 0 turned by the hand wheel 0 so that the tools can be caused to take up any angle desired.

In applying the machine to the work, as shown for example in Figure 1, where the work is in the form of a locomotive firebox G having shaped sides so that the rivet-s g which secure the two walls together are arranged at varying angles and in some cases are in positions where a horse-shoe riveter With equal legs would not be able to reach, the adjustable leg 64 of the frame is inserted inside the work and frame tilted to any angle desired by the known suspension arrangements already referred to. To get the inner tool C on to the work the extension of the inner leg (1, of the frame is obtained by releasing the slide 6 and operating the rack of the slide until the tool 0 is brought down sufficiently far to reach the work. Final ad; justment of the tool is made by angularly adjusting it around its supporting axis or pivot c by the Worm gearing shown, the outside tool C being correspondingly adjusted; in angle to obtain the correct setting. It will be seen that owing to the variable effective length of one of the legs of the frame obtained by means of the additional adjustable member B, riveting can be effected through a considerable range of angles relatively to the main axis of the frame, so that work can be easilv reached which would be quite inaccessible to a riveter of horseshoe type having legs of constant length.

\Vhat I claim and desire to secure by Letters Patent of the United States is 1. In a double tool riveter, a rigid U- shaped frame comprisin a pair of tool carrying legs, a separate ad ustable frame menn ber forming the terminating portion of one of the said rigid frame legs, a slide on the upper end of the said separate member, a

guide in the end of the corresponding leg, means for adjusting the slide in the guide and for looking it in adjusted position and a pai of opposed riveting tools one of which is mounted on the said adjustable frame member, for the purpose specified.

In a double tool riv'eter, a rigid U.- shaped frame comprising a pair of tool carryinglegs, a separate adjustable frame member forming the terminating portion of one of the said rigid frame legs, a slide on the upper end of the said separate member,a guide in the end of the corresponding leg, a toothed rack on one side of the said slide, a pinion engaging the rack and adapted to adjust the slide in position in the guide, a locking bolt adapted to, clamp the slide and guide together and a pair of opposed riveting tools one of which is mounted on the said adjustable frame member, for the purpore specified.

3. In a double tool riveter, a rigid U,- shaped frame comprising a pair of tool can rying legs, a separate adjustable frame member forming the terminating portion. of one,

the saidrigid frame legs, a slide on the said separate member, and an associated guide in the corresponding leg, which slide and guide members comprise a, bevellededged rib extending into, a bevelled edged groove. means for adjusting the slide longitudinally in the guide, a locking bolt adapt ed to clamp the slide andguide together so that thesaid bevelled edges grip each other and apair of opposed riveting tools one of which is mounted on the said adjustable framemember, for the purpose specified,

R. P. RICHARDS.

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