US437329A

US437329A - Machine-planer head

Info

Publication number: US437329A
Authority: US
Publication date: 1890-09-30
Anticipated expiration: 1907-09-30

Description

J. BOPP. MACHINE PLANERHEAD.

(NoModeL) Patented Sept. 30, 1890. 7

nvmvrok WITNESS 97% flwd 5M 8w, ATTOR/VEK Fig. 1.

UNITED STATES PATENT OFFICE.

JOHN- orn or BROOKLYN, NEW YORK.

MACHlNE-PLANER HEAD.

SIECIFICATION forming part of Letters Patent No. 437,329, dated September 30, 1890.

Application filed April 28, 1890. Serial No. 349,779- (No model.)

.To all whom it may concern:

Be it known that 1, JOHN BOPP, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Machine-Planer Heads, of which the following is a specification.

My invention relates to improvements in cutter-heads for machine-planers; and it is an improvement upon the invention patented to me as assignee of myself and John McOort by United States Letters Patent, dated February 4, 1890, and numbered 420,569.

In the drawings hereof the same referenceletters indicate the same parts in all the figures.

Figure 1 illustrates an end view of the cutter-head, all but one corner thereof being broken away, and shows the method of attaching the cutter to the head and the pecu liar construction of the head. Fig. 2 illustrates a side elevation of the parts shown in Fig. 3 illustrates an end sectional view of an alternative construction of the cutter-head, the section being taken between two adjoining separate knives.

7 present invention.

I refer to the said patent for a general description of the cutter-head, the arrangement of the parts, and the operation of the same, and shall confine the description and illustrations of this present application to those parts only which specifically relate to the In the said former patent the forward ends of the knives were confined by a shouldered bolt located beyond the edge of the head, which bolt was held to the head on a side at right angles to the side upon which the knife which it held rested. I have discovered that the knives can be supported as effectively for some purposes by throwing out brackets beyond the corners of the head, which shall not be broader than the width of the knives supported upon them,

stantially the distance between the axis of the head and the side thereof midway between two corners, then the result will be the same as when the brackets are used, and the size of the head as a whole may be reduced. I show both of these alternative forms in the drawings hereof.

Referring first to Figs. 1 and 2, A is the cutter-head. B are the brackets thrown out therefrom at its corners. They may be integral with the head or separate and fastened to it. C are the knives. D are the menforce plates. They are not essential, but I prefer to use them. E are the rear bolts, which may be screwed into a straight hole tapped into the head, as shown in Fig. 3 at F, or they may have enlarged heads G, which work in a longitudinal undercut or dovetail groove H out in the head, as in the other patent, and I are the bolts, which hold the front end of the knives. They may also have enlarged heads J, which fit and engage in a dovetail groove K cut longitudinally through the brackets, as shown in Figs. 1 and 2, or

they. may be screwed into threaded holes made in the brackets or their equivalent, as shown in Fig. 8. If the dovetail grooves are used, the knives may be more quickly and easily adjusted, and may also be shifted somewhat along the head.

In Fig. 3 I illustrate the alternative construction above referred to, in which the metal of thehead is cut away between the knives on an are L of a circle struck from the axis of the head, leaving only the parts Mbethe head, and in the other instance the circle will be defined by a radius from the axis to the middle of the side of the head between the corners, and in both cases the knives are supported upon brackets which project radially beyond the said circle.

I do not limit myself to the details of construction shown, since they may be somewhat departed from and still the gistof my invention be employed.

I claimthe knives rest, the metal between'the brackets being removed, and a dovetailed groove running through the brackets, substantially 1. A cutter-head for planers, having brackas set forth. r 5 5 et-like parts integral with the head,whieh are Signed at Brooklyn, in the county of Kings not wider than the knives and. upon which and State of New York, this 26th day of April, the knives rest, the metal between the brack- A. D. 1890.

ets being removed, substantially as set forth. I JOHN BOPP.

2. A cutter-head for planers, having braek- Witnesses: 1o et-like parts integral with the head,which are PHILLIPS ABBOTT,

not wider than the knives and upon which FREDERICK SMITH.