US376268A

US376268A - Wood-molding machine

Info

Publication number: US376268A
Authority: US
Publication date: 1888-01-10
Anticipated expiration: 1905-01-10

Description

(No Model.) 2 sheets-Sheet 1.

W. J. SMITH.

` WOOD MOLDING MACHINE.

No. 878,288. l Patented Jan. 10, 1888.

NIIIIIIH fdl N. PETERS. Phawumogmphcr, whi nnnnn c.

(No Model.)` 2 Sheets-Sheet 2.

W. J. SMITH.

Woon MOLDING MACHINE.

No. 376,268. Patented Jan. 10, 1888.-

' the T-shaped grooves a.

UNITED STATES A PATENT Ormea.

`VVALTE'R J. lSMITH, OF MPHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 376,268, datedJanuary 10, 1889.

appncauonniea May 2, isa?. sentano. 236,753. (No moda.)

To @ZZ whom, it may concern:

Be it known that I, WALTER J. SMITH, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Wood-Molding Machines, of which the following isafull, clear, and exact description, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

The object of my invention is to provide adjustable bearings for curved work, as will be fully set forth in the following specification and claims.

In the drawings, Figure l is a front view of a wood-molding machine. Fig. 2 is a transverse section on the line .fr m of Fig. l. Fig. 3 is a vertical section on the line y y of Fig. 1. Figs. 4, 5, and 6 are detached details; and Figs. 7, 8, and 9 illustrate a modification, as will be hereinafter explained.

Similar letters of reference indicate similar' parts in the respective figures.

A is a plate attached to the front of the frame of a wood-molding machine, having the T-shaped grooves a formed therein. B is an arm or rest forming apart of the casting C, which is adapted to be bolted tothe plate A. This arm B is provided with a dovetailed groove, b, and a hole, b', adapted'to receive a bolt, b2. (See Fig. 7.)

D lis a'doveta'iled slide, having arms d at each end, which form bearings for a roller, E. (See Fig. 4.) This slide is adapted to fit in the dovetailed groove b, and the roller E will form a centralbearing, bywhich the other rollers, F, can be adj usted vto suit a curve of any radius, the casting C being bolted to the plate A, so as to bring the roller E directly in a linez with the spindle c, which carries the cuttingtool. The rollers F are arranged as follows, (see Fig. 5:) T-headed bolts f are inserted in Apiece of pipe, f, somewhat longer than the roller F, (which is also a piece of pipe,) is fitted over t-he bolt f, and the roller F is loosely placed over Vthe pipe f. By operating `the nut f? the boltf can be'firmly secured at auy'point in the T- shaped groove in which it is inserted, and thus the rollers F can be vertically adjusted in their respective grooves to suit a curve of any radius. The front plate is provided with it the tool-spindle and the cutting-tool, can be raised or lowered, as the operator desires.

Referring now to Figs. 7, 8, and 9, I will state that heretofore it has been exceedingly difficult to mold pieces of wood having an elliptical form, owing to the irregularity of the curve, and it has been the custom to make elliptical moldings in three or more pieces.

As a consequence, the work at-the joints has always had a more or less imperfect appearance. By myinvention, as illustrated in Figs. 7, 8, and 9, I have overcome this difficulty, as I will now proceed to explain. G is a bracket, its base having a dovetail, g, adapted to tit in the dovetailed groove" b Aof the rest B. The lower part of the face of the bracket is cutout, as shown at g', so as to form ashoulder. The bracket G is also provided with a' slot, g2.

H represents a piece of wood ofan elliptical form. To this piece of wood a narrow strip of wood, h, is temporarily attached, by nails or otherwise.`

The operation of molding elliptical work is as follows: The bracket G is inserted in the dovetailed groove b, and adjusted, by means of the bolt b2 and slot g2, to suit the thickness of the piece of wood to be molded. The piece of wood H is then inserted between the face of the bracket and the cutting-tool, the narrow strip h tting in the shoulder g',V and the upper surface of the arm B forming a bearing for the piece of wood H. It will be readily seen that the piece of wood will be held tlrmly in position against the cuttingtool, and that the bearing will be uniform, no matter how much theV curve may vary, and that elliptical moldings can be made in one piece, the work being uniform throughout.

Having described my invention, I claim IOO 1. In a wood-molding machine, a frontplatc provided with a series of vertical parallel grooves having a series of rollers whose axes are horizontal, adjnstably retained therein,

5 combined with a rotary cutter, substantially as described.

2. In a Wood-molding machine, a front plate provided with a series of parallel grooves in combination with rollers adjustably retained Io therein, and an arm, B, )rovided with an adjusting-jaw having a recess, g', within which a guide-strip upon the molding is adapted to pass, substantially as described.

3. In a Wood-molding machine, a front plate provided with a series of open-ended vertical i5 parallel grooves, a, in combination with supporting-rollers having a bolt extending longitudinally through and forming an axis for the rollers, one end of the bolt being provided with a head and the opposite end with a thread zo and nut, for the purpose substantially as set forth.

In testimony whereofl hereunto set my hand and seal.

WALTER J. SMITH. [E s] Witnesses:

BENJAMIN SHERRY, FREDERICK M. PILE.