US500790A

US500790A - Derson

Info

Publication number: US500790A
Authority: US
Publication date: 1893-07-04
Anticipated expiration: 1910-07-04

Description

(No Model.) 0 3 sheets-sheet 1r H. P. ANDERS-0N.

WOD MOLDING- MACHINE.

PatentedJuly 4, 18793.

(No Model.) 3 Sheets-Sheet 2.

H. P. ANDERSON. Woon M0LDIN0- MAGHINE.

No. 500,700. Patented .my 4, 1803.

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(No Model.) v 3 Sheets-Sheet; 3i

H. P. ANDERSON.

f WOOD MOLDING MACHINE. No. 500,790. Patented July 4, 1893.

UNITED STATES PATENT OFFICE.

HARRY PEARCIVEL ANDERSON, OF WASHINGTON, DISTRICT OF COLUMBIA.

WOOD-MOLDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 500,790, dated J' uly 4, 1893.

Application filed March 12, 1892.

.To all whom t may concern.-

Be it known that I, HARRY PEAEOIVEL AN- DERsON,a citizen of the United States, residing at Washington, District of Columbia, have invented certain new and useful Improvements in Vood-Molding Machines; and I 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.

My invention relates to wood molding machines and more particularly to that class designed for the purpose of ornamentin g irregular forms such as balusters, chair and table legs and other articles, by turning upon them spiral iiutings.

The invention consists of certain improved constructions and combinations, including a v rotary cutter head secured to a revoluble horizontal shaft which extends transversely to the axis of the work and which is mounted in vertically adjustable bearings; also in a traversin g work carrying frame or carriage mount- `ed upon a pivoted bed plate, andin constructions combined therewith whereby the said carriage may be traversed' past the cutter head and at different angles with relation thereto.

The machine is also organized with devices by means of which other classes of work may be performed, and with certain details of construction and combinations of parts more particularly pointed out in the specifications following and in the claims at the end thereof.

In order that my invention may be clearly understood I have illustrated it in the accompanying drawings, in which- Figure l represents a side elevation of my improved machine. Fig. 2 is a plan view of the same. Fig. 3 is a partial transverse sectional view on line -x of Fig. 2. Figsa and are partial side elevations showing the devices for raising and lowering the cutter head. Fig. 6 is a side elevation of the interchangeable spur wheels for rotating the blank. Fig. 7 is a similar view showing a modification of the same.

Similar letters of reference indicate identical parts throughout.

The different parts of the l machine are mounted upon a suitable frame A consisting of the standards A and braces A2 and pro- Serial No, 424,698. (No model.)

vided with a platform B upon which the bed plate C of the work carrying frame is pivotally mounted. The platform B is preferably provided with slots ct through which bolts a project from the bed plate C, adapted to receive thumb nuts on the under side of the platform. By this means the carriage may be rmly secured when turned to any desired angle with relation to the cutter head.

To the head stock D are secured rods F, F, to which are secured the standards T9 b, the lower ends of which are adapted to receive the slides or rods F F', which are movably mounted inlugs c c upon the bed plate C. The tail stock E is connected to both the rods F F and F F and is adjustable upon them toward or from the head stock. These parts form the worl frame or carriage and the construction permits adjustment for different sizes of articles to be operated upon.

Upon the bed plate C supported in suitable bearings, is a cross shaft H, upon which is rigidly mounted a gear wheel d adapted to mesh with the rack I, secured to the ends of carriage in such a manner as not to interfere with the adjustment of the tail stock a beveled gear wheel d2 is also mounted upon the shaft H, adapted to mesh with a second beveled gear Wheel d3 mounted upon a rod K in such a manner as to turn with, but allow longitudinal movement of said rod independent of said gear. This may bef accomplished by making the rod K square in cross section as shown, or by providing it with a spline or feather and fitting the gear d3 upon it. The gear d3 is held in engagement with the wheel d2 by means of the collar 7c supported by the standard 7c secured to the bed plate. The gear wheels d d2 may be made integral if desired, taking the form of a beveled wheel with spur projections for engaging the rack I. The rod K is preferably journaled in downwardly projecting parts of the frame of the carriage, and has rigidly mounted upon it at one extremity the spur wheel L. The cross shaft H may be rotated by the crank arm I-I' or by belt gearing H2 the ordinary cross belt and idle and live pulleys being used or by other suitable gearing as desired, to produce reciprocating motion for the carriage. It will be noted that by this arrangement of parts, the rotation of the cross shaft H, causes the IOO longitudinal movement of the work carriage and also the rotation of the rod K which imparts motion to the spur gearing L, L', L2, the spur wheel L as stated being rigidly secured to said rod. The spur wheel L2 is loosely mounted on a live spindle Z journaled in the head stock D and provided with a chuck which imparts rotary motion to the blank being operated upon, the said wheel L2 being adapted to be rigidly secured to said live spindle and to operate the saine as hereinafter described.

In order that the pitch of the spiral desired to be turned upon the blank may be varied, the spur wheels L, L L2 are made of different sizes and are interchangeable, the arrangement of said wheels as shown in the drawings being such, as to cause the blank to revolve the least number of times, in the passage of the carriage past the cutter head, and consequently to produce a spiral having the least pitch. lt is evident that by changing the position of these wheels, as for instance, using the spur Wheel L in the position occupied bythe gear wheel L2, the number of turns which the blank will make during the movement of the carriage past the cutter head will be increased which will also increase the pitch of the spiral being formed. In order to permit this adjustment, the idle wheel Ll is mounted upon an arbor Z2 ad j ustably secured in a slot Z provided in the part Z4 which is preferably removably secured to the frame of the machine, by means of a bolt and nut provided near one end of said part, leaving the other end free for limited vertical adjustment. The arrangement of parts is such that it enables the machine to trace right and left hand spirals by turning the frame to opposite angles of inclination to the cutter and cutter shaft,and commencing at opposite ends of the blank being operated upon, but as itis desirable to have the work approach the cutter head in the same direction, l prefer to use the construction disclosed in Fig. '7, in which the small spur wheels L3, L4 are employed, the wheels L, L2 being mounted as before described.

The wheels L L3, L, are mounted upon arbors secured to a lever V pivotally mounted upon the frame of the machine, in such a position as to enable the wheel L to mesh with L, and either the wheel L3 or L4 to mesh with L2 by moving the lever V upon its pivot, the said wheels L', L3 being always in mesh. By this arrangement it is obvious that by throwing the idler L4 into or out of gear with the wheel L2 the direction of rotation of the wheel L being the same, the wheel L2 and consequently the blank will be operated in opposite directions.

ln order that the interchange of the gear wheels shall be permitted to allow changes of speed, the lever V is preferably mounted upon a part secured in a slot provided in the frame of the machine, the said part being adjustable in said slot, and to still further facilitate the interchanging of the wheels, the arbor on which is mounted the wheel L is adj ustably secured in a slot provided in the lever V. Any other means for facilitating the interchanging of the spur wheels may, however, be employed.

In order to start the spirals at the proper points on the blanks, l use the device Z( which consists of a recessed disk loosely mounted upon the live spindle Z and provided with pins or projections adapted to engage suitable openings in the wheel L2 thereby causing the wheel and disk to rotate together, the said wheel L2 being also loosely mounted upon said spindle as stated.

Rigidly secured to the live spindle Z by.

means of a set screw, or analogous device is the part Z7 provided with the pivoted spring arm Z5 having an inward projection adapted to engage one of therecesses Z8 of the disk. By means of the pivoted spring arm a double row of openings Z8 may be used on the disk and the arm made to engage any one of them. When it is desired to start the spiral at different points on the blank, the spring arm Z5 is disengaged from the disk and the live spindle Z connected with the blank, turned until the desired point is reached when the spring arm Z5 is made to engage the proper opening ZS of the disk and holds the blank from independent rotary motion during the operation of cutting, vcausing the disk, wheel, spindle, chuck and blank to rotate together.

The cutter head N is mounted on the horizontal shaft N journaled in vertically movable bearings n. The bearings n are rigidly secured to rods n which pass through guides or collars n2, n2 secured to the frame and are rigidly connected together' by the cross bars n4, nl, the former of which is engaged by one arm of the lever a5 pivoted to the lug n provided upon the under side of the table. A second lug 'n.7 has pivoted to it the lever 'ns provided with the movable weight n and the handle/n10. Theleverrisalsoconnectedwith a foot lever consisting of the upright nu and treadle 'm12 mounted upon one of the brace rods A2 forming a portion of the frame of the machine. The shaft N is provided with an ordinary belt pulley N2 and belt for the purpose of imparting motion to the cutter head, the power being applied from the shaft M.

In order to permit the automatic vertical adjustment of the cutter shaft, and at the `same time to maintain the proper tension for `the driving belt of the cutter head, the ma- IOO IIC

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will tend to maintain the proper tension for the driving belt and at the same time the vertical adjustment of the cutter head will be permitted. An additional Weight may also be provided upon the frame if desired, or if the Weight of the frameis not found sufficient.

The cross bar m16 is provided with the adj ustable arm o having a forward projection, upon which is preferably mounted a roller o adapted to engage the pattern O secured in the carriage by the bracket arms o3 or other preferred means, the mode of securing be ing such that one pattern can be removed and another substituted with little 4or no delay. The roller o is kept in engagement with the pattern by means of the weight fn acting to keep the cutter head raised to the highest position possible.

It is obvious that the position of the'pattern in the carriage may be reversed, and the roller made to engage its upper side, the

weight of the cutter head mechanism serving to keep the roller in engagement therewith. It is also obvious that the pattern may be made so as to take the form of a slot or groove in which the roller is adapted to operate.

In using this machine for the purpose of cutting spirals the carriage is turned on the platform B into such a position as to pass the cutter head obliquely.

By removing the idle gear L and properly adjusting the frame, it is obvious that straight work may be performed, such as cutting lonu gitudinal grooves o1' similar configurations. It is also obvious that while the cutter head is shown as operating upon the under side of the blank, it will operate equally as well upon the upper side and the upright supports for the bearings in which the cutter shaft is mounted being movable vertically as described, the upper or lower surface of the blank may be operated upon as desired.

When it is desired to hold the cutter head from vertical movement or to release it from the weight n, the lever arm n3 may be supported upon the projection.

I do not desire to limit myself to the exact details of construction described,as they may be considerably modified without departing from the spiritof my invention.

What I claim, and desire to secure by Letters Patent, is-

l. In a wood molding machine the combination with a revoluble cutter-head having a horizontal shaft, vertically movable supports for said shaft, and means for adjusting the vertical position of the said supports and shaft to bring the said cutter-head into operative position above or below the work as desired, substantially as described. 2. In a Wood molding machine the combination with a revoluble cutter-head having a horizontal shaft, of vertically movable supports forgthe same, means for adjusting the height of the shaft to bring said cutter-head into operative position above or below the work, and a pattern mechanism controlling the position of the cutter-head in respect to the work to give the desired contour to the same, substantially as described.

3. In a wood working machine the combination of a revoluble cutter-head having a horizontal shaft, of vertically movable supports for said shaft, means for adjusting the said supports and shaft to bring the said cutter-head into operative position above or below the Work, a lever connected With said supports and shaft for moving the same in avertical direction, and a Weight removably connected `with said lever whereby the Weight may be employed to maintain the shaft in dilferent elevated positions or the shaft be permitted to maintain a loW position by the weight of its supports and connecting parts, substantially as described.

4. In a wood molding machine the combination of a revoluble cutter head having a horizontal shaft, of vertically movable supports for said shaft, a cross bar adjustably secured to said supports, a lever connected to said cross bar for moving said supports and shaft in a vertical direction, a weight removably connected with said lever and a reversible pattern for controlling the movement of the shaft under the influence of gravity or of the Weight, substantially as described.

5. In a Wood working machine the combination with the bed plate having the perforated ears, the slides F', F movably mounted in said ears, standards adj ustably secured to said slides, rods F, F, mounted in said standards, the head stock mounted on said rods and the tail stock adj ustably mounted on said rods F, Fjsubstantially as described.

6. The combination with the pivoted bed plate, the movable Work carrying frame and the live spindle mounted in said Work carry-l ing frame, of a shaft mounted longitudinally in said frame and geared with said spindle, a rack mounted longitudinally in said frame, a gear mounted on said shaft to slide longitudinally of the same but to turn therewith, a shaft mounted on said bed plate transversely of the said frame, and provided with a gear engaging said rack and a gear engaging the gear on the longitudinal shaft, substantially as described.

In testimony whereof I hereby affix my signature in presence of two witnesses.

, HARRY IEARCIVEL ANDERSON.

Witnesses:

WILLIAM T. WOOD, L. P. WHITAKER.

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