US2470959A

US2470959A - Apparatus for forming the ends of wood pieces

Info

Publication number: US2470959A
Application number: US535303A
Authority: US
Inventors: Joseph W Swenson
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-05-12
Filing date: 1944-05-12
Publication date: 1949-05-24
Anticipated expiration: 1966-05-24

Description

May 24, J, w SWENSON 2,470,959

APPARATUS FOR FORMING THE ENDS OF WOOD PIECES Filed May 12, 1944 9 I5 I 9 ,7 F/G.

' m wwrglyilnm 22 am a I'NVENTOR. .705EPH W. 5 WEN50N Patented May 24, 1949 UNITED $470,959. APPARATUSPITGB FORMING THE END'S orwoon PIECES Joseph Swanson, summit, 'N. J.

Application May -1'2, 1944, Serial No. 535,303

10 Claims. 1

This invention relates to an apparatus for forming the 'endsof wood pieces such as hereinafter referred to as pickets, and ornamental shapes simulating a ship of the destroyer type. The pickets. are relatively narrow boards having their: opposite edges at one end ar cuately formed with the apex meeting substantially on the "me- 'dia'n line "of the picket, while the ornamental 'shapeshave both'ends arcuately cut. Y

After considerable study, I have evolved a relatively "simple apparatus wherein these picket ends and ornamental shapes. may be formed by the apparatus being "operated either manually orbyother power, such as an electric motor.

"Iheapparatus to be described is so constructed that different widths 'of pickets may be operated on, or the an'gularity off the line 'of cut may be varied, and hence the primary object "of the invention is to provide a relatively simple and inexpensive apparatus for obtaining the aforesaid ieatures, safety in operation being one of the important factors of the invention. In describing my invention, I have chosen to describe it in connection with a picket since the ornamental feature is an adjunct thereto.

My invention will be readily understood b ref erence to the annexed drawing, wherein:

Figure 1 is atop plan view of Figure 2, without the picket.

Figure 2 is a side elevation "of the apparatus with the picket in place, ready to be operated on.

Figure 3 is a view of Figure 2 looking from right to left, without the picket. I

Figure 4 is a view similar to Figure 2, but showing in full lines the position of the parts during part of the cutting stroke, and in dotted lines the full end of the stroke.

Figure 5 is a perspective view showing an ornamental device simulating a ship in which the main parts are made by the apparatus of Figures 1 to inclusive.

Figure 6 is a diagrammatic illustration of a motor control for operating the'structure. v

Figure 7 is a side elevation of the cam which. ma be used with the apparatus in Figure "6.

Referring now to the details, wherein like numbers refer to corresponding parts in the various views, I is a support member preferably of strong metal such as sheet steel, having a ledge portion 2 with holes 3 at its opposite ends for fastening to any desired member. Fastened at its oppo site ends, as by bolts 4 and 5, is a rigid bar 6. The bar 6 is spaced a distance away from the support I but extends substantially parallel thereto. The end 1 which receives the bolt 4 is bent inwardly toward the support to form an en; gagement'sui'face'for the bolt 4. At the opposite end 'of the bar 6, the bolt 5 acts as a pivot stud, going through a member 8 and'th-rough the sup, port I. If desired, the support may be threaded to receive the bolt 5, and "a nut 9 is used to hold the stud 'sec'urely'in position.

Preferably, spacing washers l0 and H aroused, respectively, between the bar 6 and the member 8, and the support I and the member 8. I prefer to make the member 8 of Wood or plastic material. The bar 6 has additional means, suchas holes 12, through which the pivot stud 5 may be passed, not only through the bar 6, but through the member 8 and the support I, so that the stud may be used in either of the two holes 12.

'Pivoted to the rnember 8 by a stud iii, are. a pair of spaced, rigid bars I! and [5 which extend. butwardly from the opposite sides of the member 8. Fast'ened between the bars I l and I5, asb'y a stud or screw [6, is a grip block II. This is also preferably made of wood or plastic material. The bars M and [5 may be slotted or provided with one or more holes such as 35 for adjusting the position of the block I! longitudinally of the bars fit and I5. The edge of the block IT, toward the member '8, has a slight taper as indicated at B. Also fastened between thebars I' t'and l5, as by a plurality of screw-studs l9 and '2 is a strip 21 preferably of wood or plastic material terminating in 'a handle portion '22. .As shown inFi'gur-e 2-, the block I! has a recess into which the end of the strip 2'l ma extend. V

The member 8 has a through-stud 24 which is adapted to be engaged by the bars l4 and f5 rs'r returning them to normal position. The support I has a stud 25 acting as a stop for the member 8 iii its normal position. The support I also carries a stop 25 in the form of a short plate having one end bent around a holding stud 21 which is positioned in a Soil; 28 in the 'support The stud 21 carries a wing nut 2Q whereby the stop plate 26 may be readily adjusted vertically in the support I.

Fast'ened between the fixed bar 6 and the support I, is a knife or cutter 3!]. The bar -6 may be provided with a slot or one or more holes 3! whereby the cutter may be adjusted longitudinally 'of the bar 6. The adjustment features re ferred to are for the purpose of changing the angularity of the out and accommodating different Widths of woos pieces. The latter, owever; may be attained by removing the piece 23, which is held to the under side of the strip 2| by one ear more screws; and attaching it to the engage ment edge of the member 8 to serve as a spacer for a narrower picket or piece of wood.

In the operation of the structure just described, and as illustrated in Figures 1 to 4 inclusive, a picket or piece of wood P is inserted between the bars I4 and I5, being assisted by the inclined surface I8 on the block W, and also downwardly between the fixed bar 6 and the support I against the stop 26. On raising the bars I 4 and I upwardly about their pivot I 3, through the medium of the member 2i and the handle portion 22, the block I I is moved into engagement with one edge of the picket P, forcing the opposite edge of the picket against the relatively long surface of the, member 8. Thus the picket P is gripped as in a vise and is carried upwardly with the arms I4 1 and I5. This action causes the member 8 to rotate about its pivot stud 5 and swing the picket about this center, causing the knife or cutter 3!] to engage the edge of the picket and cut it on a line as indicated by the broken line 36 in Figure 4, the end of the cut terminating substantially on the median line of the picket as indicated by the broken lines in Figure 4 which shows the final position of the apparatus at the end of the cutting operation.

The bars I4 and I5 are then moved downwardly by the handle 22, whereby at least one of them engages the pin 24 which preferably extends all the way through the member 8 so that both bars I4 and I5 engage opposite ends of the pin. This carries the member 8 back to its normal position against the stop 25. The picket P is then withdrawn and turned around so that the opposite edge can be cut as just described.

In Figure 6, I have shown a power control for the apparatus. In this figure, the motor M is connected through a gear reduction to a magnetic clutch C to which current is conveyed by the slip rings R and brushes B through the medium of a switch S. The armature A of the clutch C is slidably but non-rotatably movable on a shaft 32 carried between bearing supports 33. On the shaft, is fastened a cam 34 which may be of any suitable form for engagement with the member 23 or an extension thereof, and in the claims, where I refer to a source of power, this may be either manual or electro-mechanical.

In the operation of this device, when the switch S is closed, current is conveyed through the brushes B to the slip rings B into a coil, not shown, within the magnetic clutch C. This draws the armature A, which is slidably but non-rotatably mounted on the shaft 32, into fixed engagement with the clutch C. Assuming that the motor M is running, the shaft 32 is turned through the gear reduction G, and the cam 34 is brought into engagement with the member 23 or an equivalent thereof attached to the bars I4 and I5.

After the cut on the picket or piece P has been made as described, the switch S is opened at the right time of the cycle of operation, either manually or automatically, and the bars I4 and I5 with their associated parts are: returned to normal position by a spring. In place of the magnetic clutch and cam described, a rack-and-pinion action may be used. Hence, the details for the electro-mechanical means may be varied over a considerable range.

In Figure 5, I have shown two

wood pieces

31 and 38 cut by the apparatus just described and fastened together in any satisfactory manner to simulate a ship. The piece 38 may be fastened to 31 by the members 39, the center one of which may be in the form of a stack and the forward and rear ones in the form of gun turrets. However, these last-mentioned details are no part of the present invention, Figure 5 being shown merely to illustrate the adaptability of the apparatus to cutting pieces which may be used for other purposes than for fence pickets; hence I do not wish to be unduly limited as to the scope of my invention and the appended claims.

What I claim is:

1. An apparatus for forming the ends of fence pickets including, a support, a rigid fixed bar fastened at one end to the support and extending longitudinally of the support in spaced relation thereto, the bar having its opposite end fastened t0 the support by a pivot stud, a member carried on said pivot stud between the bar and support and having an engagement edge to receive one edge of a picket, a positioning stop for said member fastened to the support, a pair of spaced bars extending on opposite sides of said member above said fixed bar and pivoted to the member nearer said engagement edge than the said pivot stud for the purpose described, a grip block fixedly carried between said pair of bars to grip, between itself and said member, a picket adapted to be passed between said pair of bars, the block and said member, a stop carried by the support for the end of the picket, a cutter carried between the fixed bar and the support so as to engage the picket and cut it on a curve when the picket is moved in the manner described by the conjoint action of said member and the block, means for lifting the bars carrying said grip block, and means carried by said member for engagement by said pair of bars when they are brought back to startin position for returning said member to starting position against its stop.

2. An apparatus for forming the ends of fence pickets as set forth in claim 1, further characterized in that means are provided for mounting said member on the pivot stud at different points along the length of said fixed bar and support for the purpose described.

3. An apparatus for forming the ends of fence pickets as set forth in claim 1, further characterized in that the stop for the picket is vertically adjustable on the support, while the cutter is adjustable along the length of the fixed bar for the purpose described.

4. An apparatus for forming the ends of fence pickets as set forth in claim 1, further characterized in that means are provided for mounting said member on the pivot stud at different points along the length of said fixed bar and support, and further characterized in that the stop for the picket is vertically adjustable on the support, while the cutter is adjustable along the length of the fixed bar for the purpose described.

5. An apparatus for forming the ends of fence pickets including, an elongated support having a stop thereon, a rigid bar extending longitudinally of but in spaced relation with the support and fastened at its opposite ends to the support, a member pivoted on one of said fastenin means between the bar and support, said member hav ing a straight side of considerable length to engage the edge of a picket, a pair of spaced bars pivoted to and on opposite sides of said member above said fixed bar and extending beyond the same, a grip block fastened between said pivoted bars and having a gripping edge to engage a picket and adapted, when said pivoted bars are raised, to force a picket, inserted downwardly to said stop on the support between said pivoted bars as well as between said fixed bar and the support, against the straight side of said member to move the picket with said member around its pivot, and a cutter carried by said fixed bar to cut an arcuate surface at the end of the picket when the movable bars are raised.

6. An apparatus for forming the ends of fence pickets as set forth in claim 5, further characterized in that the grip block has a slight taper on its gripping edge.

7. An apparatus for forming the ends of fence pickets as set forth in claim 5, further characterized in that the said member has a pin projecting from at least one side to be engaged by its corresponding pivoted bar for movin said member back to its normal stop position when the bars are returned to starting position.

8. An apparatus for forming the ends of wood pieces including a support having a vertically adjustable stop for receiving the end of a Wood piece 7 that is to be cut, a fixed bar extending longitudinally of the support, and having a portion spaced from the latter to pivotally receive a gripping member, a gripping member pivoted to the support and bar and havin substantially a straight edge to engage one edge of the wood piece to be cut, a grip block carried by means pivotally attached to said member and normally positioned just above the fixed bar for gripping the Wood piece on the edge opposite to that engaged by said member, said member and block being moved simultaneously toward gripping and cutting positions, the block being normally spaced longitudinally from said member a distance sufficient to allow a wood piece to be inserted in a vertical direction between them in edgewise position down to the stop and a cutter non-rotatably fastened at least in part to the support and. extending downwardly into the upward path of movement of the wood piece for cutting away one end edge of the piece as the piece is moved, said means for carrying the block being engageable by a course of power for moving said member and block simultaneously to perform the cuttin operation.

9. An apparatus as set forth in claim 8 further characterized in that said gripping member and cutter are independently adjustable along the fixed bar and support, While the grip block is adjustable along the means for carrying the block whereby the contour of the cut may be varied as well as diiferent widths of pieces may be op- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 73,339 Johnson Jan. 14, 1868 273,614 Schmachtenberger Mar. 6, 1883 442,399 Safford Dec. 9, 1890 477,459 Safford. June 21, 1892 644,285 Ek Feb. 27, 1900 1,108,167 Hammond Aug. 25, 1914