US424091A - Wood-working machinery - Google Patents

Description

. 4 Sheets-Sheet 1. fr. G. BUGBEE. WOOD IvvoRKm-l MACHINERY.

Patented Mar. 25, 1890.

(No Model.)

4 Sheets-Sheet 2.

(No Model.)

T G BUGBEE WOOD WoRKNG MACHINERY.

IME/W02? (No Model.) f 4 sheets-sheet 3. T. G. BUGBEB.

l WOOD WORKING MACHINERY.

Patented Mam. 25, 189.0.

nA vains. mmuuwgnpm, wmlngn. n. c.

(No Model.) Y 4- she'et-s-sheet 4.

' T. Gr. BUG-BEE.

WOOD WORKING MACHINERY.

Patented Mar. 25, 1890.

N. Patins. mwuxmgnpw. mummy; Q Qn UNITED STATES PATENT OEEICE.

TRUMAN G. BUGBEE, OF SHEBOYGAN, VVISOONSIN. y

WOOD-WORKING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 424,091, dated March 25, 1890. Application filed September 2l, 1889. Serial No. 324,649. (No model.)

To all whom t may concern:

Be it known that I, TRUMAN G. BUGBEE, a citizen of the United States, residing at Sheboygan, in the county of Sheboygan and State of Wisconsin, have invented certain new and useful Improvements in Wood-VVorking Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to certain new and useful improvements in wood-working machines. It is known that the tongues that slide back and forth in the grooved sections of an extension-table, for instance, swell by absorbing moisture, and so fill the groove that the sections stick and work hard in eX- tending and closing the table. It has been found that if one end of the tongue is made compressible by means of saw-cuts and a groove is cut in one side of it, so as to leave onlya portion of the original bearing-surface, and thus form a swell, the clearance thus given will cause the tongues to slide easily at all times, while the spring of lthe wood bearing on the swell or portion left in contact with its guide is sufcient to keep it from rattling. This groove has been cut previously by hand at considerable labor and expense.

The object of my machine is to provide means for cutting this groove rapidly and cheaply in any number of tongues, whereby the cost of reduction is lessened and a uniformly better article produced than by any previous method.v

In the accompanying drawings, forming a part of this specification, and in which like reference-letters indicate corresponding parts, Figure 1 represents a side elevation of the machine and a portion of the feed-chute; Fig. 2, a rear elevation of the machine; Fig. 3, a cross-section of a cutter-shaft with a cutter-head mounted thereon, showing its position near the beginning of its operation on a wooden tongue, also an edge view of said eutter and a cross-section of said tongue, showing the shape of the groove cut in the latter; Fig. 4., a plan view of the machine and a portion of one feed-chute, the other removed and other portions-of the machinebroken away in order to show construction; Fig. 5, a portion of the frame of the machine having vertically-sliding boxes and attachments mounted therein and a cutter-shaft andattachments mounted in said boxes; and Fig. 6, a

Avertical longitudinal section of the machine best in Fig. 2,) between which is mounted a large pulley O', and having mounted near one end the fast and loose pulleys D D', respectively, while near the other end is a small pulley E, connecting by a belt F with a larger pulley G, mounted on a shaft H,turn ing in suitable bearings H' I'I in said frameA, While a smaller-pulley I is also mounted on said sh aft H and turns with it, thus giving a slower motion through the belt .I to a larger pulley K, mounted to rotate and when unclutched to slide longitudinally on a shaft L, iixed in the frame A aforesaid, whereby the number of rotations of the pulley K is much less than those of said driving-shaft B. Rotatably mounted on said shaft L is a small gear M, having on one face a portion of a clutch N, engaging with a corresponding portion N', secured to said pulley K, which latter portion has au annular groove O, engaged by the surrounding portion of a lever I), pivoted to the frame A, 4whereby the pulley K may be thrown out of or into connection with the said gear M, that meshes with a larger gear M', fastened near one end of a shaft' Q, turning in a' suitable bearing R, carried by a bracket on the frame A, and having mounted on the other end a balance-wheel S, provided with a pin or stud S', projecting from its outer face, in order to carry one end of a pitman or connection T, the other end of which is pivoted in a casting T', secured to a table U, slidingly mounted in guides V V, firmly secured by brackets WV to the frame A, wherebya reciprocating motion is imparted to said table. A dovet-ailed groove a is cut on the inner face of each guide V of a shape suited to receive half the thickness of the tongue t, and

the guide is cut away from above, as shown at c, to allow the tongues to enter the said grooves. Over each opening c is placed an inclined chute b, into which the tongues are fed by hand, and slide down through an opening in the bottom of the chute, so as to suc- IOO cessively enter t-he groove a. Each chute is long enough to hold a number of tongues set on edge, as suggested byydotted lines in Fig. l and shown in plan view'in Fig. 4, while Fig. G shows a portion of a chute broken away and one tongue in the chute in position to drop through the opening into the bottom of said chute, when a tongue in the groove a, that now supports its lower corner, shall be carried onward by the reciprocating table. rlhe last tongue in the chute ZJ cannot drop into the groove a until the tongue which goes ahead of it and is now directly underneath is carried onward. Projections or shoulders on the table U engage the tongues as they enter the grooves and a forward movement of the table slides them past the spring catches or detents e c, pivoted to the said guides V, and thus prevents their return, as shown in Fig. 4, when a backward movement of the table occurs and brings the spring-catches ff, pivoted to the table, into engagement with said tongues, so that the next forward movement of the table will push the tongues onward again and out of the grooves in the guides into suitable receptacles and at the same time bring another set of tongues to the said catches e c. It will thus be seen that the reciprocatingmovement of the table U causes the tongues to take two steps in their passage through th'e grooves a, resting at the detents e e till the next forward movement,

-for a purpose presently to appear.

I will now describe the cutter and its action. The aforesaid pulley C belts to a pulley 7L, iixed on a shaft g, turning in bearing y1', to be described presently. Near each end of said shaft g is removably mounted and held by a nut g a suitable cutter-head j, carrying cutters lr, securely fastened thereto and arranged to be conveniently adjusted on loosening the bolts k; The shape of the cutters is such that they will cut a groove in each tongue acted on, of a section shown at Z in Fig. 3, along one edge of the tongue, leaving a short portion at m untouched. The object of this portion, as before stated, is that when the tongue swells from absorbing moisture there is suilicient clearance to prevent its binding in the groove of an extension-table, for in-v stance, and yet always has contact at the portion fm, that was not cut away, because the spring of the wood left by the saw-cuts n n tends to keep portion m in normal contact with its groove, as well as to allow a slight variation in the width of the tongue, whereby there is no chance of the tongues rattling nor sticking fast in their respective grooves.

I will now explain how the said portion m escapes beingcut away. The aforementioned bearings i consist of suitable boxes with flanges o, embracing guides 0 in the frame A. Projections p extend from the bottom of said boxes through suitable openings in t 1e frame A, and at their lower ends engage with springs q, secured to the frame by bolts q', whereby the boxes and the shaft g carried therein tend to move upward, but are limited by thehold-down plates fr, secured to the fralne A by bolts fr. I may, if desired, use any other form of spring in connection with said proj ections p to cause said upward tendency. On the top of each box or bearing 'L' is a pair of lugs or projections s, supporting a rollers in contact with the bottom of said table U, to which table are secured strips u, with inclined ends in line with said rollers .5, so that in the aforementioned forward movement of the table U these strips u will engage said rollers, overcome the action of the said springs q, and depress said bearings t' and the cuttershaft carried therein just before the front ends of the said tongues 't arrive at the said cutters k. The tongues pass over the depressed cutters, past the said detents e, and are prevented by them from returning when the table returns, thereby freeing the rollers from contact with the said strips a and allowing each cutter to rise to its normal position, whereby the beginning of the eut is made in the tongue over it, as shown in Fig. 3. On the next forward movement of the table the tongues now held by the catches f are carried onward in the direction of the arrow and the grooves cut to the rear ends thereof and then ej ected from the grooves d in the guides V.

I would observe that while the devicey U has been termeda table, it will be noted that its function is to carry or assist in carrying the tongues to the cutters, so that a device which performs this carrying fnnction is considered the equivalent of what is contemplated by the term table as herein viewed.

I would further observe that this machine has a double capacitynthat is to say, it operates on two tongues at the same time, cutting the left-hand part of one tongue and the right-hand part of the other tongue, as suggested in Figs. 3 and 5, from the latter of which it will be seen that the cutters are revcrsely inclined.

Ilaving thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

l. In a woodworking machine, the combination, with asuitable frame, guides, a reciprocating table, and actuating mechanism therefor, chutes delivering tongues to the guides and table, and suitable spring catches attached to the guides and table, respectively, the catches on the guides arranged to hold the tongues under operation and the catches on the table to force said tongues out as the table brings up succeeding tongues, of a horizontal cutter-shaft mounted under said table and carrying cutters revolving in a vertical plane, spring-controlled bearings which hold said shaft in normal position, and vertical guides therefor, the bearings being caused by the springs to approach the table and being depressed from the table by projections on the table that engage with said bearings.

2. In a wood-working machine, the combination, with a suitable frame and a recipro IOS ICS

IIO

eating table, of revolving cutters under said table automatically adjustable to and from the table by means of a strip on the bottom of the table acting to depress said cutters at a suitableperiod in the travel of the tongues, grooved guides for the tongues which lead to the cutters, a chute delivering` the tongues in to the guides, suitable catches for the tongues, a pitman,balance-wheel, and gear-and-clutch connections for giving motion to the said table through speed-diminishing pulleys.

` In a wood-working machine, the combination, with a chute for delivering tongues, a guide and a reciprocating table which conjointly receive and automatically hold the tongue to be acted on and discharge it by the forward movements of the table, and suitable catches which assist the guides and table in these operations, of vertical revoluble cutters, reciprocatingbearings therefor, and means to throw the cutters out ofthe plane of the tongue during a portion of the travel of the tongue past the cutters and to return the cutters into engagement with the tongue during the remainder of the travel thereof.

et. In a Wood-Working machine, the combination, with an inclined chute with an outlet for tongues in the bottom thereof,a guide located under said chute having a portion cut away to allow the entrance of the tongues from said chute, a table also cut away to receive the tongues, means to reciprocate the table, and automatic catches, one on the guide to hold the tongue from returning with the table andthe other on the table to discharge the tongue from the guide, of revolu- .ble ,cutters slidingly mounted in vertical sliding bearing in said grooves and cutaway to receive and hold the tongues and advance them, a chute for each guide over each entrance thereto,.and suitable catches for preventing the return of the tongues and for again advancing and discharging them with the table, each former movement of the table acting simultaneously to discharge one tongue and advance the next to the middle of the groove on each side, of vertical sliding springactuated bearings near said guide, a cuttershaft mounted in the bearings, right'and left hand cutters carried by said shaft, and projections on the table which depress the bearings beforeand during a portion of the travel of the tongues within the field of rotation of \the cutters.

In testimony whereof Iafiix my signaturey in presence of two Witnesses. l

TRUMANiG'. BUGBEE. Witnesses:

'FRANCIS WILLIAMS,

E. A. ZUFELT.

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