US332999A

US332999A - Stone-dressing machine

Info

Publication number: US332999A
Authority: US
Publication date: 1885-12-22
Anticipated expiration: 1902-12-22

Description

(No Model.)

H.'DONNELLY.

STONE DRESSING MAGHINE.

No. 332,999. 7 Patented Dec. 22, 1885.

WITNESSES UNITED STATES PATENT FFlGE HENRY DONNELLY, OF SUTHERLAND FALLS, VERMONT.

STONE-DREVSSING MACHINE.

SPECIFICATION forming part of Letters Patent No. 332,999, dated December 22, 1885.

Application filed J nly 8, 1885. Serial no. 171,016. (No model.)

To all whom it may concern.-

Be it known that I, HENRY DONNELLY, a citizen of the United States of America, residing at Sutherland Falls, in the county of Rutlaud and State of Vermont, have invented certain new and useful Improvements in Stone- Outting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to certain new and useful improvements in machines for cutting stone; and it consists in the construction and combination of the parts whereby an even and steady power accompanied by a powerful pressure can be applied to the cutting-knives, between which are placed the slabs of stone which it is desired to cut, as will be hereinafter fully set forth, and specifically pointed out in the claims.

In the accompanying drawings, which illustrate my invention, Figure 1 is a side view of my improvement. Fig. 2 is a sectional view. Fig. 3 is a sectional View taken through the line so 00 of Fig. 2, and Fig. 4 is a detailed view.

Arepresents a solid bed-plate to which is rigidly attached a pair of vertical posts, 0 O, which are provided on their sides with vertical grooves s 5. These upright posts 0 C are connected to each other by a transverse cappiece, B, which is securely bolted to the upper ends of the posts, as shown. This cappiece or crossbar B is provided at its center with bearings I) b, within which is journaled a shaft, H, which carries at its outer end the drive-wheel G. The shaft H, between the bearings b b, is provided with an eccentric or crank, F, to which is pivotally secured a bar,

F, the lower end of which is provided with a ball, K. A knife, E, is provided at its upper portion with a socket for the reception of the ball K, which is attached to the arm or bar F, so as to connect the knife with the eccentric portion of the shaft. The knife E is reciprocated vertically, and is guided in its upward movement by the grooves s s. The knife E may be of any suitable configuration, and

at its lower portion it is provided with a straight cutting-edge, which, as well as the body portion of the knife, may be curved laterally, as shown in Fig.- 3, so that it may be employed to cut slabs having irregular-shaped edges. A knife, D, of a similar configuration is rigidly attached to the upper surface of the bed-plate A between the grooves s s.

I am aware that prior to my invention stonecutting machines have been constructed with upper and lower knives, between which are placed the slabs for severing the same, the upper knife being connected to a piston-rod of a steam-engine; but in practice it has been found that such construction is objectionable,

as the blow which is imparted to the stone through the upper knife is of such a nature that instead of forcing the stone apart on a line with the knife it shatters and irregularly breaks the edges, whereas with my improvement a slow and powerful pressure is applied to the knife, which will split the stone on a line with the edges of the knife. The st k or stone slabs whichit is desired to sever e usually sawed to an even thickness ani re held in position between the knives vhl e they are being brought together. Some m s the stock or slabs are uneven, one e ge of the same being thicker or thinner i' i the other. When this is the case, the -1011113 attached to the upperxknife will llow the knife to adjust its cutting-edge 119 1 the Surface of the stone so that it will act with the same throughout its entir g h, and thus allow the edges of the vi pe nd lower knife to be in contact wit h upper and lower surfaces of the slab fu commence, ment'to the end of the stro' The device hereinbefoi "iiesfiflbed 18 seful for cutting up thin stoo Q pf marble or scale for tile-floor, vsi l v s, furniture-tops, t l 8 d the kn ves are of the configuration whichiti (16311136 '60 give to the edges of said slabs and by the device hereinb f d c ib d can sever the slabs without waste d ie the corners with sharp anles. g If desirable other connections than the belth l can 1 made for the shaft H.

I claim-- In ;.machine for cutting stone, the comthe grooves s, and the cap-piece B, having the bearings 12, of the shaft H, having the eccen- 1 trio or crank F and carrying the wheel G, the arm F, having the ball K, and the knife E. having the socket and placed parallel to the fixed knife D, as described.

In testimony whereof I affix my signature in 2: presence of two witnesses.

HENRY DON N ELLY.

Vitnesses:

FRED R. PATCH, WM. SMITH, Jr.