US101577A - Improvement in tinman s machine - Google Patents

Description

@anni @twine CHARLES BROMBACHER, 0F TARRYTOWNNEW YORK.

Letters Patent No. 101,57 7 dated Aprill 5, 1870.

IMPROVEMENT IN TINMAN'S MACHINE.

The Schedule referred to in these Letters Patent and making part of the same To all whom itmay concer/n Yof New York, have invented an Improvement in Tininans Machines, and the following is declared to be a correct description ofthe same.

This machine is for bend-ing up the edges of sheet metal and 'inserting thewire, and performing other work usual in this class of tinnians machinery.

I make use of a case that is constructed so as to exclude dust and dirt, and small pieces of sheet metal and foreign substances from the gears and journals, and to keep the oil-holes free from dirt.

I also place the center, upon which the upper shaft swings, on the level, or nearly so, of the points of contact of the rollers, so that the upper roller may swing or lift nearly vertically off the lower roller.

In machines of this class the sliding box of the upper shaft is usually acted upon by a screw, that requires, generally, two or three turns in entering and releasing the work.

I effect this operation by on'e movement of a swinging lever, so that but little time is consumed, and the operation is very much facilitated.

In the drawing- Y Figure 1 isa vertical section, longitudinally, Qt' the shafts, and

Figure 2 is a cross-section, at the line a: a'.

The lower shaft a is provided with the roller b at one end, and the crank-handle at the other end.

This shaft is passed into journal-boxes, formed in the case d. I find that bushings and separate boxes are not required. I therefore form the bearings for said shaft by holes bored through the case d.

The gear-wheel f is fastened upon the shaft d by a screw or key, and a collar, g, outside of the oase, pre vents end motion in the shaftet.

The shaft h carries a roller, k, atone end, as usual, and the gear l is fastened thereon, and a collar or washer, m, prevents cud motion, the gear-hub and collar m being on opposite sides ofthe bearing n.

.The bearing a is attached to the case d by a bolt or pin, 2, that passes through the same about midway between the shafts c and h, and hence is about in line with the point of contact of the rollers k and b, so that the said part of the roller k may lift vertically, or nearly so, when the outer end of the shaft h is raised, instead of swinging outwardly, as usual in the machines heretofore made, with the trunnions or axis of motion in line with the center of the shaft- 71 at the back bearing.

The opening in the case d for the bearing n is of g nearly the same size and shape as said bearing, so as to allow the bearing to swing on the pin 2bult exclude dust and dirt. l

The case l is made of a size and shape to contain the shafts, gearing, 85e.; and one side of the case is formed with a door, d', hinged at 4, so as to be easily opened to give access to the parts, and allow for introducing oil into the holes 5 of the respective journals; and when this door d is closed, dust and dirt are electnally excluded. A butt-on or catch at (i secures this door d'. l

The swinging end of the shaft h. passes through a box, o, that is in an openingprovided for it in the case 1,and said box moves'up and down with the shaft. l

[n order to close the case d at this point, I use a plate, p, that has a hole for the shaft h to pass through, and is pressed to the surface of the case '(1 by a spring, o'.

.In order to prevent the plate p turning around upon the shaft h, and also to keep the box o from slipping back upon the shaft l1, I connect the box and plate by screws, shown by dotted lines at 7 there being sntlicient play or looseness at the heads of the screws to allow of the motion of the parts as the shaft his raised by the spring 8, or depressed by a cam-lever acting upon the top of the box o.

The top of the box ois made as an incline, as shown in lig. 2, and I employ a swinging earn-stop, s, that is connected, through the. top of the case d, with the lever t.

It will now be evident that the movement of the lever t in one direction will allow the roller k to be raised, in consequence of the cani-stop s moving down the incline 0f the box 0,' thus liberating the work bctween the rollers. The reverse movement brings the rollers upon the work, so as to hold them while thc edge of the sheet metal is't-nrned or wired.

The standard u is cast with thev case il, and has a snciently broad base, and a bolt, t', to pass through the work-bench and be secured by a nut below, thus avoiding the large moitises and holes usual for receiving machines of this class, and supporting them upon the bench.

I claim as my invention- .`l. The case d, made in the manner specified, to receive the shafts a and h, and inclose the gearingand holesvfor oiling the journals, combined with a removable door or cover, as set fort-h.

2. The box An for the shaft 71, fitted to move upon the center or pin 2, located about midway between the shafts a and h, for the purposes and as set forth.

3. The box o of the shaft h, litted to slide in the cose (I, and made with an inclined upper edge, so as the case d, with a bolt projecting down to receive a nut, for securing the tiumans machine to the bench, as and-for the purposes set forth. Signed by me this 4th day of February, A. D. 1870.

CEAS. BROMBAGHER.

Witnesses OHAs. H. SMITH, GEO. T. PINCKNEY.

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