US1223125A - Tenoning-machine. - Google Patents

Description

w. c.l TROENDLE.

TENomNG MACHINE.

APPLICATION FILED AUG2B l9l6.

1,223,125. Patented Apr. 17, 191.17.

a SHEETS-:suur l.

C. TROENDLE.

lTINONING MACHINE.

APPLICATION FILED AUG.28. I9I6.

W. C. TROENDLE.

TENONING MACHINE.

APPLICATION man Aue.2s. |916.

Patented Apr. 17, 1917.

3 SHEETS-SHEET 3.

Y INVENTU 1T STA-TES WILLIAM C. TROENDLE, OF TOLEDO, OHIO, ASSIGNOR TO THE TOLEDO WHEELBARROW COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

TENONINGr-MACHINE.

Specification of Letters Tatent. Patented Apr. 17, 1917.

Application mea August 2s, 19,16. serial No. 117,255. v

To all whom it may concern.'

Be it known that I, VILLIAM C. TRonN- DLE, a citizen of the United States, and a resident of Toledo, in the county. of Lucas and State of Ohio, have invented a certain new and useful Tenoning-Machine; 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, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification. p

This invention relates to wood-working machines, and particularly to a machine adapted for cutting tenons on wooden strips or bars.

The object of my invention is the provision of an improved machine of the character described, which is provided with one or more reciprocally movable cutter mechanisms, each of which is adjustable relative to the frame and other cutter mechanism to have reciprocatoryymovements at either a right angle or at different oblique angles with respect to the work, whereby tenonsmay be cut straight across or tapered relative to the longitudinal axis of the workpiece. Other objects and advantages of the invention will be apparent; from the following detailed description thereof.

` While the invention, in its broader aspect, is capable of embodiment in numerous forms, a preferredembodiment thereof is illustrated in the accompanying drawings, in which,

Figure 1 is angend embodying the invention. F ig. 2 is a 'reduced side elevation thereof lwith a part broken away and with the cutter heads adjusted for straight tenon cutting. Fig. 3 is a perspective view' of a bar having tenons cut thereon by the machine, adjusted as shown in Fig. 2. Fig. 4 isa top-plan view of the machine with the cutter heads adjusted for tapered tenon cutting. Fig. 5 is a bottom plan view of one. of fthe cutter head carrying base plates with a turn table mounted thereon and with parts broken away. Fig. 6 is a section on the line 6'-6 in Fig. 2. Fig. 7 is an enlarged elevation of the work guide standard with parts broken away, and Fig. 8 is a side view of a bar having tapered tenons cut thereon.

elevation of a machinev of its center.

Referring to the drawings, ldesignates a stationary machine frame, which( is shown as having its sides 2, Ztransversely spaced and connected at the ends by integral` crosspieces 3. The frame sides 2 are each inwardly under-cut at their inner top edges, as at 4, to providea guide-way of dovetailed form lengthwise of the frame in which the complemental portion of a base plate 5 is mounted for sliding movements lengthwise Vof the frame. Two base plates 5, in the present instance, are provided with and intended to carry tenon cutting mechanisms for simultaneously acting on the opposite ends of a work-piece'or bar to cut tenons thereon. A yokeG is suspended from the bottom of each base plate; 5 by screws 7, and coacts with the inner over-hung edges of the frame sides to assist in bracing and retaining the base plate to the frame.

A table 8 is mounted on' the top of each base plate 5 for movement therewith and for turning movements relative thereto, the table, for such purpose, having an annular flange 9 projecting from its bottom and rotatably fitting into a circular recess 10 in the base plate top (see Fig. 2). rIhe table is held to the base plate by screws 11, which project upward through vsegmentalslots 12 in the base plate and into the bottom of the table 8 and permit a limited turning of one 1 on the other. y

frame 1, said base 13 and table having, in

the present instance, dove-tail connection. Each base 13 is provided 'above the plane ofthe table 8 with a circular .top part 15 from which the standard 14` rises at one side A'pair of upper and lower bearing heads`16 and 17, respectively, are dove-tailed on a side of the standard 14 over the central portion of the base plate 15 for vertical sliding movements on said standard, as shown at 18. `The two bearing heads arel adjustably connected together by an interposed screw 19 which has right and left threaded connection, respectively, therewith, as shown in Fig. 2, whereby a turning of the screw in one or the other direction will impart relative inward or outward adjusting movements to the bearing heads.

A screw 20, having a hand wheel 21 at its top, is vertically journaled in the top por tion of the standard 14 and has its lower end threaded down through a registering boss 22 on the inner side of the upper bearing head 16, thereby causing said screw to adj ustably support both bearing heads with respect to the standard.

The upper and lower bearing heads 16 and 17 have shafts 23 and 24, respectively, journaled therein, and each carries a cutter wheel 25 at its inner end, or the end thereof adjacent to the other frame head of the inachine, said cutter wheels being disposed with their peripheries in opposed relation to coperate to cut a tenon on the end of the work-piece or bar A. The outer end of each shaft 23, 24 carries a pulley 26, from one end to the other of which a drive belt 27 extends in engagement with opposite sides thereof, as best shown in Fig. 1. This belt is tensioned with respect to the pulleys 26, 26 by idler pulleys 28, 29, the former being carried above the upper pulley 26 on a stub shaft 30 projecting from the bearing head 16 and the latter being carried on a stub shaft at the outer-end of an arm 31, which pivotally proj ect-s outward and upward from the lower end portion of the bearing head 17. The engaging of the belt 27 with opposite sides of the upper and lower pulleys 26, 26 of a set causes the associated cutter wheels 25, 25 to be driven in opposite directions. The cutter wheel-s 25 may be of any suitable construction, and as no claim is made for the specific construction of these wheels they will not be specifically described.

Projecting upward from the inner side portion of each table 8 at the inner sides of the respective frame head 14 and cutter wheels 25 is a post or standard 32, the upper .end of which is provided with a transversely elongated narrow head portion 33, which is recessed in one side thereof as at 34 to form -a guide into which the adjacent portion of a work-bar A may be inserted when being acted on by the cutter wheels. An adjustable stop 35 is secured to the head 33 at the inner end portion of the recess 34, and a yielding pressure foot 36 is mounted in fb top wall of the head recess to exert a. yielding downward pressure on a work-piece when inserted in the guide recess. The pressure foot 36 is carried for limited vertical movements by bolt-s 37 projecting down through the upper wall of the recess 34, and

coiled compression springs 38 encircle these bolts and bear downward against the pressure foot 36 to yieldingly retain the same in lowered position.

An end gage in the form of a finger 39 projects from the upper bearing head 16 of one set, the left-hand set in the present in stance, and extends in position to have contact with the adjacent end of a work-piece A when inserted in working position in the guide heads 33, 33.

The base plates 5, 5 of the two tenon cutting mechanisms are simultaneously adjustable toward and away from each other by the turning of a shaft 40` which is mounted in the base frame 1 in bearings 41 provided in the respective end pieces 3, 3 of said frame, and has its opposite end portions threaded through bosses 42 on the bottoms of the respective base plates 5, the thread in one boss being right-hand and that in the other left-hand. The central exposed portion of the shaft 40 has an adjusting lever 43 in ratchet connection therewith, said ratchet being of the customary right and left type to enable the shaft to be turned in either direction by oscillatory movements of the lever.

The main drive shaft 44 of the machine is mounted lengthwise thereof in bearings 45 in the respective end pieces 3 and at each end carries a pinion 46 in mesh with a gear wheel 47 mounted on the respective end of a shaft 48, which shaft is journaled lengthwise of the frame in bearings 49 provided in the respective end pieces 3 thereof. A pulley 5() is mounted on one end of the drive shaft 44 and has connection with any suitable source of power through the belt 51. An arm 52 is pivoted to the outer side of each gear wheel 47 at one side of its axis, as at 53, and extends across the gear wheel past its center and is provided at its opposite or free end with 'a screw 54, which may be threaded into any one of a set of apertures 55 which are segmentally arranged in concentric relation to the swinging axis 53 of the arm 52. lThe arm 52 is provided with a wrist pin 56 at a point thereon which is in arcuate register with the wheel axis when the arm 52 is swung on its axis, thereby ladapting such wrist pin to be placed in axial register with the axis of the gear wheel 47, or to be positioned at one side or the other thereof in suitably spaced relation thereto,

depending on the aperture 55 in which the f arm holding screw 54 is inserted, as is apparent by reference to Fig. 1. A link 57 projects from the wrist pin 56 toward what may be termed the rear of the machine, and connects at its outer end with the wrist pin on a rocker arm 58, which is fixed to and rises from the adjacent end of a rock shaft 59. This shaft extends the entire length of the frame and is journaled in bearing arms 60 projecting rearwardlyv from the end portions of the frame.

A second rocker arm 61, of greater length than the arm 58, lixedly rises from each end of the rock shaft 59 and has pin and slot' part 15 and has an arm 64 projecting rearward therefrom and embracing the bar 62 in a manner to cause reciprocatory movements to be imparted to the yoke from backward and forward rocking movements of said bar, and at the same time to permit the yoke 63 and its arm to have sliding movements on the bar lengthwise of the machine frame. A pair of brackets 65 are fixedly carried by the top of the base part 15, one at each side of its axis, and Voverhang the adjacent portions of the yoke 63. The overhanging portions of the brackets 65 carry one or more set screws 66 which, when the frame head base and yoke 63 have been relatively adjusted to suit the angle at which it is desired to cut tenons on work-pieces, are tightened against the yoke to secure the yoke and frame head in adjusted relation.

The operation of `my improved machine is as follows: Preparatory to cutting the tenons on work-bars A the operator rotatably adjusts the frame heads to suit the desired angle at which it is desired to cut such tenons with respect to the longitudinal axes of the work-bars. This adjustment of the heads is accomplished by loosening the set screws 66, which coperate with the brackets 65 to rigidly connect the yoke 63 and frame head base part 15. This having been done, the tables S with the frame heads thereon are turned to place the frame head base runways therein at the desired angles with respect to the longitudinal axis of the machine frame, the parts being secured in such position by a tightening of the set screws 66 against the yoke 63. 1f the frame heads are properly spaced to suit the length of the work-pieces to be operated on, the operator may proceed Ato tenon the workpieces. If not, the hand lever 43 is operated to turn the screw shaft 40 in the desired direction to properly space the frame heads. When the machine is ready for acting on the work-pieces' the operator connects the drive shaft 44 with the operating power, thereby causing rotation to be communicated from said shaft to the gear wheels 47, which in turn cause backward and forward rocking movements to be imparted to the bar 62 and from it to the yokes 63 and frame heads to which said yokes are attached. It will be understood that the direction of movement of the respective frame heads depends on the angle at which the guide-ways in the tables 8 are set with respect to the machine frame, and that the yokes 63 will have sliding movements lengthwise of the bar 62 to an extent equal to the angular adjustment of the tables. It will also be understood that the length of the backward and forward strokes of the frame heads may be regulated by placing the gear wheel arm screws 54 in different apertures 55 excepting the center one of said apertures.v r1`he operator stands in front of the machine and places a work-piece in the guides 33 when the frame heads are at the rear ends of their strokes so that the tenon cutting action takes place on the forward strokes of said heads, the work-piece being removed duringA a rearward stroke of the frame heads.

lt is evident that 1 have provided a simple and efficient machine which is operable and adjustable to cut straight or tapered tenons, and at the same time to simultaneously cut tenons on opposite ends of a workpiece, thereby facilitating the cutting of such tenons and cheapening the manufacturing cost thereof.

Havingthus described my invention. what I claim 'as new and desire to secure by Letters Patent, is-' 1. 1n a machine of the class described, a table mounted for angular adjustment, cutter means carried by said table for angular adjustment therewith and having tongue and groove connection with the table to adapt it to be reciprocated relative thereto, said cutter means having a circular base part, a yoke adjustably embracing said base part, and means operable to impart reciprocatory movements to said iirst means through said yoke.

2. In a machine of the class described, a frame, separate tables carried by said frame for angular adjustment relative thereto and to each other, a work guide mounted on each table, cutter means carried by each table for angular adjustment therewith and for reciprocatory movements transversely thereof, and mechanism operable to impart simultaneous reciprocatory movements to said cutter means. Y

3. In a machine of the class described, a frame, separate tables carried by the frame for angular adjustment relative thereto and to each other, a frame head mounted on each table for angular adjustment therewith and guided thereby'for reciprocatory movements transversely of the table, each frame head having a circular base portion, cutter means carried by each frame head, separate yokes rotatably embracing the circular base parts of said frame heads and having arms projecting therefrom, means for adjustably securing the yokes to the frame heads, and mechanism having a rocker member in connection with the arms of both yokes and operable through said yokes to impart reciprocatory movements to the frame heads in any direction for which they may be angularly adjusted.- I

4. In a machine of the class described, a frame, a base plate mounted for reciprocatory movements on said frame, a table mountedjfor rotary adjustment on said base plate, a frame head mounted on said table for angular adjustment therewith and for gli reciprocatory movements transversely thereof, cutter means carried by said frame head, a yoke adjustably connected to said frame head and having an arm projecting transversely therefrom, and means having a rocker member in sliding engagement with said yoke arm and operable to impart reciprocatoiy movements to said frame head on said table.

5. ln a machine of the class described, a frame, a base plate adjustably carried by said frame, means operable to adjust said base plate relative to the frame, a table carried by said base plate for angular adjustment relative thereto, a frame head carried by said table for angular adjustment therewith and for reciprocatory movements transversely thereof, the direction'of such reciprocatory movements being changed by an angular adjustment of the table, means adjustably connected to said frame and projecting therefrom transversely of Jshe direction of permissible adjustment of said base plate, and means having a bar projecting loosely through said rst means at one side of the frame head and operable when rocked to impart reciprocatory movements to the frame head on said table.

6. In a machine of the class described, a frame, a base plate adjustably carried by said frame, means operable to adjust said base plate relative to the frame, a table carried by said base plate for angular adjustment relative thereto, a frame head carried by said table for angular adjustment therewith andfor reciprocatory movements transversely thereof, the direction of such reciprocatory movements being changed by an angular adjustment of the table, means adjustably connected to said frame and projecting therefrom transversely of the direction of permissible adjustment of said base plate, and means having a bar projecting loosely through said iirst means at one side of the frame head and operable when rocked to impart recprocatory movements to the frame head on said table, said operating means being adjustable to vary the throw or its rocker bar.

ln testimony whereof, I have hereunto signed my name to this specification.

WILLIAM C. TROENDLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

Washington, D. C.

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