US823787A - Knife for striking off brick. - Google Patents

Description

' PATENTED JUNE 19, 1906. J. JACKSON & G. RUHOBBS.

KNIFE FOR STRIKING OFF BRIGKL APPLICATION FILED MAR. 7, 1906- I All uoamtow whim:

QXWM no I UNITED STATES PATENT OFFICE.

, JESSE JACKSON AND GEORGE R. HOBBS, OFLOUISVILLE, KENTUCKY.

KNIFE FOR STRIKING OFF BRICK.

Specification of I etters Patent.

Patented June 19, 1906.

Application filed March '7, 1906. Serial No. 304,772.

T on whom it may concern:

Be it known that we, JESSE JAcKsoN and GEORGE R. Hones, citizens of the United States, residing at Louisville, in the county of Jefferson and State of ,Kentucky, have invented certain new and useful Improvements in Knives for Striking Off Brick; and we 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 the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in knives for striking off brick to be used in connection with sand-mold brick-machines and comprises a simple and. efficient device of this nature, being made of a concaved shape and disposed diagonally over the path of the molds as they issue from I the machine.

The invention consists, further, in various details of construction and combinations and arrangements of parts, which will be hereinafter fully described and then specifically defined in the appended claims.

Our invention is illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, and in which Figure 1 is a perspective view showing a portion of a brick-molding machine and showing the application of our invention thereto. Fig. 2 is an enlarged perspective view of the invention. Fig. 3 is a top plan view showing the knife held to the table of a brickmolding machine, and Fig. 4 is a detailed perspective view showing one end of the knife and a bail-shaped member fastened thereto.

Reference now being had to the details of the drawings by letters, A designates the table of a brick-molding machine, upon which the molds are supported as they are moved out from under the plunger of the press, and B designates our improved striking-off knife, said knife being made, preferably, of conical shape and having a removable cutting-blade C, which may be hinged or otherwise fastened to the concaved portion of the knife B, and one end of said knife has a rod D secured thereto, the other end of which rod is fastened to the stationary portion of the brickmolds of the machine. E designates an angled bracket-arm fastened to said table and carries two rods E, which pass through the bracket-arm and also through the blade 0 of the knife. Nuts F, mounted upon the threaded ends of said rods, and springs G are interposed between the nuts on the lower ends of the rods and the bracket-arms, whereby the enlarged end of the knife may be allowed to yield. The small tapering end of the knife has a bail-shaped member H fastened thereto, which member is provided with registering apertures h, as shown clearly in Fig. 4 of the drawings, and adapted to receive a rod N, which is mounted in the bracket-arm O, fastened by means of screws adapted to be passed through the apertures Q to the table. A spring R is interposed between one arm of the bracket member H and the top thereof and aflords means whereby the small end of the knife may yield slightly.

In applying our invention the knife is fastened, referably in a diagonal osition, above t etable of the machine, as s own in Figs. 1 and 3, so that the cuttingedge of the blade will draw ,over the upper surfaces of the molds as they are drawn out from under the press and will cut off by a draw out the upper surfaces of the molded bricks, leaving a smooth surface. By arranging the knife in the position shown it is noted that the portions which are cut from the surfaces of the molded bricks will be forced laterally and fall over the edge of the table. In the event of obstructions coming in contact'with the cutting edge of the knife the latter will be allowed to yield slightly, as will be readily understood.

By the provision. of the ap aratus shown and described it will be note that a simple and efficient means is afforded whereby surfaces of molded brick as they issue from the brick-molding machine may be evenly and truly cut automatically and by the provision said knife, the other end of which rod is fas-- tened. toa stationary object, a means for fastening the tapering endof the knife to said table, the cutting edge of said knife being positioned above the path of the molds as they issue from the machine, as set forth.

2. In combination with a brick-molding machine having a laterally-projecting table, a knife, a rod fastened to the enlarged end of said knife, the other end fastening to a fixed object, yielding connections between the opposite ends of said knife and the table of the machine, as set forth.

3. In combination With a brick-molding machine having laterally-projecting table, a conical-shaped knife, bracket-arms secured to the table of the machine, rods passing through one of said bracket-arms and engaging one end of the knife, nuts upon the said rods, springs bearing between said nuts and the adjacent bracket-arms, a bail having a yielding connection to one of said bracketarms and a rod fastened to the enlarged end of the knife and connected to a stationary object, as set forth.

In testimony whereof We hereunto ailix our signatures in the presence of two witnesses.

JESSE JACKSON. GEORGE R. HOBBS. Witnesses:

ROBERT L. STULTZ, H. M. LANE.

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