US118230A - Improvement in brick-knives - Google Patents

Description

)mes Lm/LIS@ l l 1 1 8 2 3 0 PATENTE AUG 22 1871 .UNITED STATES PATENT Orrrcn.

JAMES GARITY, 0F BREWER, MAINE, ASSIGNOR TO HIMSELF AND EDWIN D.

GOUIJD, OF SAME PLAGE.

IMPROVEMENT IN BRICK-KNIVES.

Specification forming part of Letters Patent No. 118,230, dated August 22, 1871.

To all whom it may concern:

Beit known that I, J AMES GARITY, of Brewer, in the county of Penobscot and State of Maine, have invented a new and useful Improved Brick- Knife; and I hereby declare the following to be a full7 clear, and eXact description of the same, which will enable others to make and use my invention, reference being had to the accoinpa nying drawing forming a part of this specification, in which- Figure l shows a side view of my improved knife.

My invention relates to an improved knife for cutting clay into bricks. It has reference to and is designed more particularly for that class of brick-machines in which the clay, having been formed into a bar of the proper breadth and thickness, is cut into the length required for the brick by means of a knife iixed at the circumfer ence of a revolving` wheel. y

The knife now used in these machines has a straight edge, and, pressing perpendicularlydown upon the soft clay of which the bricks are lnade, tends to dent and break the surface and edges, and leaves the ends ofthe brick rough and ragged.

My improved knife is provided with two edges, forming an angle with each other, and converging to apoint at their upper ends. The cutting-edge presented to the clay is, consequently, very small at first. It cuts at both sides of the brick at once, and toward the center of the brick, thus keeping the edges smooth. From the slanting position of the edges they make a drawing cut rather than a perpendicular one, and keep sharp longer, besides being less impeded by foreign substances which may get into the clay-small stones, Src., for instance.

The. drawing fully illustrates the nature of my invention. At a is shown my :improved knife, having the inclined edges b and c. In common, it is fixed in a socket in the circumference of a wheel, d. e shows the clay to be cut into lengths. At A and B are seen variations in the form of the knife, embodying the same general principle.

What I claim as my invention, and desire to 4secure by Letters Patent, is-

The knife, constructed as herein shown, for eutting brick from a stream of clay, in combination with the revolving disk d, substantially as set forth.

JAMES GARITY.

Witnesses:

E. D. GOULD, WM. FRANKLIN SEAvEY.

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