US106534A - Franklin ames - Google Patents

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A Witnesses l Inventor /f/ @Aw-w dini-tt gieten tout entre FRANKLIN AMES, OF NORTH BRIDGEWATER, MASSACHUSETTS.

Leners 17mm: No. 106,534, dated August 23, 1ero.

- IMPROVEMENT INTMACHINES FOR RULIG- SLATES.

The Schedule referred to in these Letters Pater-1t and making part ot' the' name.

ment by which my invention may be distinguished from others of a similar class, together with such parts as I claim and desire to lsecure by Letters Patent.

lhe objeclsof this invention are:

First, a machine, by which one side of the slate can bc ruled at one stroke.

Second, a method by which the style of rulingl can be changed readily.

Third, an improved method for lifting and depressing the ruling-chisels.

Fourth, a means by which the travel of the rulingtable may be regulated.

Fifth, an improved device by which 'the slates are held while undergoing the process of ruling; and

Sixth,.an appliance by which the slate to be ruled can be easily brought Vinto the same relative position with the chisels.

1n the annexed drawing- Figure 1 is a perspective view of `the' machine, and

Figure 2, a longitudinal vert-ical section.

a is the bed 0 1' the machine, from which rise the sides af', which latter are provided with V-shaped guides b, fitting into corresponding grooves 'b" on the table. b. This table carries the whole ruling apparatus, and is ca-pable of sliding freely on the guides b of the bed a. i

The ruling-plate c, hinged to the table 1 1 at d and e, carries the chisel-frame f, which latter isfastcned to itby means oi' screws g g, or any other convenient delvice, in such a manner that theii'aine-f can be removed quickly when it is desired to put another one in place.

The chisel-frame consists of a thin plate, 71, provid1 ed with the strips i, t', which latter are notched on the side next to the plate h for the purpose of forming recesses into which the chisels o o can be introduced.

These chisels may be fastened permanently to the together4 than the distance between theadjacent chise-ls will al,low,'one chisel is provided with a number of points corresponding to the lines desired, as shown at For the purpose of bringing the chisels o in contact with-the slate/r, the crank on, shaft n, crank s, and link t have been provided.

The shaft n oscillates freely in bearings n" on the vtable b,.and the link t connects Vthe crank .sand

plate c. K

The relative position oi' the cranks m and s on the shaft 'n is such that, when the crank m is moved entirely to the left, as in figs. 2 and l1, the crank s, fig. 2, will have slightly passed its dead center, and willv have moved the back of the4 plate c to its highest posit-ion, and consequently the front side, with the attached chisel-trame, to its lowest.

It will vbe readily seen that, as the. crank m cannot move any further to. the left, and as the crank s has slightly passed its dead centerfthe parts will remain in that position until the crank mis moved to the right, when the device will assume the position shown by dotted lines shown in g. 2.

The amount of motion ot' the table is regulated by the stopping-screws u u, fitting into the lugs u' u.

IVben the screws u u have been set to their right position, the screws o o are screwed against them, and

`hold them in position, answering the same purpose as When it is desired to vary the amount of motion of i the table further `-than the length of the screws will are connected below the hed o. by a cross-bar, x, which passes through a vertical guiding-slot, rv', and through the inclined slot y in the slide y'. This latter is ca' pable of a longitudinal motion Vunderneath -the bed,

moving through recesses z e.

The `feet ff" serve to elevate the bed, to make room for the parts underneath.

In order to bring the slates intended for ruling always readily into the same relative position with the chsels, the'pins l 2 3 have been provided, which bear against the interior edge of' the frame ofthe slate-1 and 3 against two contiguous sides, and 2 against the inside corner.

The operation of the machine is as follows:

Vhen the slate has been laid upon the bed 1, with the interior edge of its ira-me pushed against the pins 1 2 3, the slide y' is pushed in, by which motion the tingers w w are brought upon the frame of the slate,

holding it tightly. The 4table is now pushed to the left u'ntil the lug meets the screw u, when, by t-urning the crank m to the left, the chisels are broughtin 'Contact with the slate, and, on drawing the table toward the right, the linear impressions are made upon the slate.

l claim as my invention only what is mentioned in the following clauses, viz:

1. Theoomhination ofthe cranks mand s, shaft n, mid

link t with the :plate c and table '11, substantially as and for the' purpose specified.

2. The combination of ,the fingers w w, cross-bm' x, recesses lw' w', slot z, inclined slot y, slide y', and recesses z e' with the bed a, substantially as and for the purpose set-forth. Y

Witnessesz FRANKLIN AMES.

' H. A. DANIELS,

J. W. MESTER.

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