US696255A - Machine for shaping cross-arms of telegraph-poles. - Google Patents

Description

No. 696,255. Patented .marhs, I902.

- w. n. NEVltLE.

MACHINE FOR SHAPING GROSS ARMS 0F.TELEGBAPH- POLES.

(Application filed. Apr. 8, 1901.)

(No Model.)

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UNITED STATES PATENT OFFI E.

WILKINSON D. NEVILLE, OF BAY CIT-Y, MICHIGAN, ASSIGNOR TO YVALIVORTII dz NEVILLE MANUFACTURING COMPANY, OF BAY CITY, MICHIGAN, A CORPORATION OF MICHIGAN.

MACHINE FOR SHAPING CROS-S-ARM S OF TELE-GRAPH-PO LES.

SPECIFICATION forming part of Letters Patent No. 696,255, dated March 25, 1902.

Application filed April 8, 1901. Serial No. 54,866. (No model.)

T w m it ay Q i the operation of the machine, and'Fig. is a Beitknown that I,WILKINsON D,.NEVILLE, perspective view of one of the cross-arms as a citizen of the United States, residing at Bay shaped by the machine.

City, inthe county of Bay and State of Michie In a suitable framework A are mounted for 5 gan, have invented certain new and useful continuous rotation a series of pairs of feed- Improvementsin Machines for Shaping Crossrolls B. These rolls are continuously driven Arms of Telegraph-Poles, of which the folby any suitable mechanism. (Not shown.)

lowing is a specification, reference being had 0 and C are two rotary cutters journaled therein to the accompanying drawings. upon crossshafts D and D, arranged be- IO The invention relates generally to machines tween two pairs of said feed-rolls. The shafts for shaping bars of wood, and more particu- D and D are journaled in verticallymovlarly to machines especially designed for shapable bearings E and E, secured to the frame 7 ing cross-arms for telegraph-poles. These of the machine and adapted to be moved by cross-arms are formed from wooden bars submechanism, as will be hereinafter set forth.

r5 stantially rectangular in crosssection, and These shafts are revolved in opposite directhe object of the shaping is to give sufficient tions by means of a drive connection, which, curvature to the upper face of the bar to as shown in Fig. 1, comprises pulleys F and cause it to readily shed water, and thereby F on said shafts and a belt G, passing over prevent rotting of the arm. As the arms are one of said pulleys and under the other,

20 mortised into the poles, it is necessaryxto thence around an idler-pulleyHandadriveleave a central portion square in-cross-sec pulley I on the drive-shaft J. The relative tion, and as thearms vary inrlength the maarrangement of these pulleys and the drive- J chine for shaping them must be provided belt is such that the pulleys F and F are free with'the requisite adjustments, so as to be to moveverticallywith theirrespective shafts 2 5 adapted for all the different sizes. Furtherwithout interfering withthe drive connection.

more, as the life of the arm depends largely The shafts D and D are normally held in upon the smoothness of its surface it is nec-' positions to respectively place their cutters essary to provide a cutter which will not split C and C out of or in the path of the work fed or tear the wood in entering orleaving the cut. between the rolls B. The bearings E for the. 0 I It is the object of the inventionto obtain a shaft D must normally be held in their raised machine that will fulfil the conditions as position, and tothis end the bearings are conabove' set forth. r V nected to a link K, which in turn is connected The invention therefore consists in the. peto a counterweighted lever L, the weight beculiar construction of a machine comprising ing sufficient to more than balance that of 35 feeding-rolls for the work, a pair of" oppothe shaft and cutter. 'Thebearings E, on the sit-ely-revolving rotary cutters, and automatic other hand, are normally lowered and are means for throwing said cutters in or out of connected by links K to the counterweighted the path of the work, so as to shape the two lever L, which is insufficient to balance the portions of the bar upon opposite sides of the shaft and cutter. 40 square center. 7 j V M and M are two dogs or trips arranged in The invention further consists in the mechrear of the feed-rolls (or to the right hand, anism employed for controlling the movement Fig. 1) and pivotally connected to the frame, of said cutters in or out of the path of the so as to be longitudinally adjustable thereon. work and, further, in the peculiar construc- To form this adjustable pivotal connection, 45 tion, arrangement, and combination of parts, the frame is provided with a longitudinally- 5 as hereinafter described and claimed. slotted bar N at one side of the path of the In the drawings, Figure 1 is a longitudinal work, to which the dogs M and M are adjustsection through the machine. Fig. 2 is a ably secured by bolts 0. Each dog is procross-section thereof on lineww, Fig. 1. Figs. vided with an inclined face projecting into 50 3 and 4 are diagrammatic views illustrating the path of the work, and the free ends of I00 said dogs are connected, respectively, by rods P and P with rock-frames Q and Q, pivotally secured in the frame. The dog M is so fulcrumed that when its inclined face is depressed the rod P will be lowered, thereby rocking the frame Q downward. The dog M, on the other hand, is fulcrumed, so as to lift the rod P when its inclined face is depressed, and thereby rock the frame Q upward. The rock-frame Q is adapted, through the medium of the lever R, to lift the weighted lever L, and thereby allow the shaft D and cutter O thereon to be lowered. The frame Q is also connected to the weighted lever L by the lever R; but the latter is so arranged that when the rock-frame Q is swung upward the shaft D and cutter O thereon will be raised. The rods P and P are so connected to the frames Q and Q that when their respective dogs M and M" are adjusted longitudinally upon the frame said rods will also adjust themselves upon the frames Q and Q. The connection, as shown, comprises a hook upon the rod P and a fork upon the rod P, which embraces the longitudinal bars a a on said frames.

The machine being constructed as above described, its operation is as follows: Motion is imparted to the shaft J and through the medium of the pulley I and belt G to the pulleys F- and F. The belt and pulleys are driven in the direction indicated by the arrows, Fig. 1i. a, the rear pulley F is driven to rotate its cutter in the direction in which the work is fed, while the pulley F drives its cutter against the work. The operator taking his station at the forward end (to leftend side) of the machine feeds the square cross-arms successively into engagement with the feed-rolls B, suitable longitudinal guides (not shown) serving to center said arms in relation to the cutters. As the cutter G is normally out of the path of the work, the latter will pass underneath said cutter without being operated upon and will first come into engagement with the rear cutter O. This will shape the upper face of the work, giving it the desired rounding form, and the operation will be continued until the end of the cross-arm comes in contact with the inclined face of the dog or trip M. The further movement of the work will then rock said dog and through the medium of the link P, rock-frame Q, and the lever R will raise the weighted lever L and permit the shaft D to descend, carrying the cutter G into the work. The dog M is so adj usted in position that the cutter C will be thrown into the work just after the central square portion of the arm has passed said outter, and when once in action it will continue to shape the arm to the end. After the cutter O is in action the cutter 0 will also continue to operate upon the work for a short interval, and this is for the reason that the space between the two cutters is necessarily greater than the distance between the two shaped portions of the cross-arm. Before the permanently square portion of the cross-arm reaches the cutter O the'forward end of said cross-arm will come into engagement with the inclined face of the dog 1 and through the medium of the link P, rock-frame Q, and lever B will depress the weighted lever L' and through the link K lift the shaft D, carrying the cutter C out from the work. In being thus forced out of the work the cutter C will not tear or roughen the work, for the reason that it is revolving in the direction of the arr0wi. e., in the direction of travel of the work.

From the above description it will be understood that the cross-arms maybe fed successively through the machine and in passing through each is shaped upon opposite sides of its center, while the central portion of each remains square to fit the mortise in the pole. Whenever it is desired to change the length of the arms, the machine may be readily adj usted by the simple operation of shifting the dogs M and M to the proper position, while the rods P and P, on account of their sliding connection with the bars a0, and the frames Q and Q, will automatically adjust themselves.

While I have described my machine as designed for the specific purpose of shaping cross-arms for telegraph-poles, it is obvious that it may have other uses, and I do not desire to be limited to this one use.

What I claim as my invention is-- 1. In a machine forshaping wood, the combination with longitudinal feed mechanism for the work, of a pair of rotary shaping-cutters movable into or out of the path of the work, one being held normally in and the other normally out, and dogs in rear of said cutters projecting into the path of the Work and respectively adapted to change the position of their cutters, said dogs being located to be operated by the forward end of the work so as to cause the shaping of the two opposite end portions of said work leaving a central portion unshaped.

2. In a machine for shaping wood, the combination of a frame, longitudinal feed mechanism for the work and ashaping-cutter movable into or out of the path of said work, a pivotal dog located in rear of said cutter and longitudinally adj ustably secured to said frame, a rock-frame secured to the stationary frame and having a longitudinallyextending bar, a rod connecting said pivotal dog with said rock-frame and longitudinally adjustable upon the latter to remain vertical in the diiferent positions of adjustment of said trip, and an operating connection between said rock-frame and cutter whereby the movement of said dog will throw said outter in or out of the work.

3. In a machine for shaping wood, the combination of a frame,longitudinal feed mechanism thereon for the work, a pairof rotary cutters arranged to operate upon the work one in advance of the other, dogs pivotally and longitudinally adj ustably secured to said frame in rear of said cutters and projecting into the their positions are changed by the engage-' ment of the work with their respective dogs.

4. In a machine for shaping wood, the combination with longitudinal feed mechanism for the work, of a pair of shaping-cutters arranged to operate upon the work, one in advance of the other, the rear cutter being held normally in the path of the work, and the forward cutter being held normally out of the work, a pair of dogs in rear ofrsaid cutters and projecting into the path of the work, and connections between said dogs and cutters whereby the forward dog will throw the forward cutter into the work after said rear cutter has been in operation and subsequently said rear dog will throw said rear cutter out of the work leaving a central nnshaped portion of the work which is less in length than the distance between said cutters.

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

WILKINSON D. NEVILLE. Witnesses:

A. G. JARMIN, G. A. MEYAR.

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