US484802A - Slate-shaving machine - Google Patents

Description

\NO Model.)

H. & E. KUR'TZ; SLATE SHAVING MACHINE.

No. 484,802. Patented Oct. 25,1892;

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I UNITED STATES PATENT OFFICE.

HENRY. KURTZ AND EPHRAIM KURTZ, OF BANGOR, PENNSYLVANIA.

SLATE-S'HAVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 484,802, dated October 25, 1892. Application filed May 28.1892. Serial N0.434,306. (N0 model) To all whom it may concern:

Be it known that we, HENRY KURTZ and EPHRAnn KURTZ, citizens of the United States, residing at Bangor, i-n-the county of Northampton and State of Pennsylvania,-have invented certain new and useful Improvements in Slate-Shaving Machines; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of refer ence marked thereon.

This invention relates to certain new and useful improvements in slateshaving machines; and it has for its objects, among others, to provide an improved machine of this class in which a crooked slate can be handled and shaved as well-as a straight oneandin which the slate will be brought down in line upon the bed and'there held while being shaved. We provide a bed which moves with the knives. The machine is a horizontal one in which the knives move back and forth and shave a slate at each reciprocation,the knives being arranged to act upon both sides of the We provide a stationary beveled breast, against which the slate is held while being acted upon. This breast serves to bring the slate down in line upon the bed before it is acted upon by the knives. We also provide improved means for holding the knives to their bed.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be specifically defined by the appended claims.

The invention is clearly 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 plan View of one-half of our improved slate-shaving machine. Fig. 2 is a vertical longitudinal section through the line 2 2 of Fig. 1. Fig. 3 is a detail showing the manner of holding the knives in place.

Like letters of reference indicate like parts throughout the several views in which they appear.

Referring now to the details of the drawings by letter, A designates the framework or support for the operating parts.

B is a shaft suitably journaled in proper position and to which motion is to be imparted from any suitable source of power. There may be arranged one, two, or more sets of supporting-beds and sets of knives. We have shown but one, as that is considered sufficient to demonstrate the construction and operation of our invention; but it will be understood that we do not restrict ourselves to but one set, as where it is desired to shave several slates at the same time the'desired number of devices may be arranged to be operated from the same shaft. We have shown upon one end of this shaft B a crank-arm G, to the pin a of which is pivotally connected in any suitable manner the pitman D, the other end of which is sleeved upon the cross-rod b of the knife-carrier, as shown in Figs. 1 and 2. The carrier E is mounted to reciprocate between the longitudinal timbers of the framework and has upon opposite sides the lugs c, which are designed to work in the guides e, which are suitably mounted upon the said longitudinal timbers of the frame, as seen in Figs. 1 and 2. At opposite ends of the carrier we aifix the reversely-inclined knife-beds E, which are suitably affixed to the carrier and upon the outer faces of which the knives are detachably arranged. The knives F, which may be of any desired construction, are arranged to slide in guides formed between the beds E and the parallel bars (1 on the sides of the carrier, as seen best in Fig. 2, and they are held in their proper position by the cam-head G, which is carried by the lever H, fulcrumed on the lug f, as seen best in Fig. 3, and arranged to bear upon the outer face of the knife and press it to its bed. This lever carries an arm g at right angles to the length of the lever and which is designed to extend over the outer edge of the knife, being provided with a rightangled part h, through which passes a setscrew 't, which may be set up against the outer edge of the knife and prevent its outward movement. When these levers are thrown up, the knives can be adjusted or removed. When thrown down, they hold the knives in their adjusted positions.

Between the knives is arranged a bed I for the support of the slate and which moves with the carrier. It is formed of slats set on edge a suitable distance apart to allow the slate renliloved by the knives to fall through between t em.

4 J is the breast, where the slate K rests when being acted upon. It is secured transversely of the machine at the center of the position occupied by the knives when at their normal location. It is oppositely beveled upon opposite sides, as seen best in Fig. 2, and is notched, as seen at j, for the reception of the independently-adjustable pressure-pins 70 upon the top and the slats of the slate-bed upon the under side.

The operation will be readily understood. The slate 'K is placed upon the bed I, and its ends will be held bythe beveled edge of the breast and the pressure-pins on the knife-bed. It the slate be a crooked one, when the knives lnoveup toward the slate and the inclined pressure-pins strike the slate they will bring the same down in line upon the bed, and it will be held there while being shaved by the knives, which act upon both sides thereof, as will be readily seen from Fig. 2. The knives can be adjusted to cut more or less, as may be desired. Any suitable means-as setscrews w-may be provided for adjusting the pressure-fingers relative to the work.

Modifications in details maybe resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

What we claim as new is- 1. The combination,with the reciprocating bed with its knives and slatted bed and independently-adj ustablepressure-pins, of atransverse bar having its edges beveled, as and for the purpose specified.

2. The combination,with the reciprocating carrier with its knives and bed and independently adjustable inclined pins, of inclined guides on the knife-bed and a transverse bar having beveled edges, as and for the purpose specified.

3. The combination,with the reciprocating carrier with its knives and independently-ad justable inclined pressure-pins, of the transverse bar fixed between the knives and having its edges beveled and notched, as shown and described.

4.'The combination, with the carrier provided with knife-bed, knife, and guide, of the lever having cam portion and an arm at right angles thereto and provided with right-angled portion with set-scr.ew, as and for the purpose specified.

5; The combination, with the frame, of the carrier and itsoperating means, a transverse beveled bar, oppositely-arranged knives on the carrier to act upon both sides of a slate, a

slatted bed between the knives, and inclined independently adjustable pressure pins on the knife-bed, as and for the purpose specified.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses.

HENRY KURTZ. EPHRAIM KURTZ.

Witnesses;

' DAVID H. SEEM,

WM. A. J QHNSON.

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