US2530867A - Spreaders for circular saw wood cutting machines - Google Patents

Description

Nov. 2l, 1959 l QIGALANGA 2,530,867`

sPREAnERs 4FCRn CIRCULAR sAw woon CUTTING MACHINES "fFiiImh 28, 1949 inw" . IN T a/f/ af @allg/[22a f l ca-)M Patented Nov. 21, 1950 sPREADEas ronomoULAn lsaw Woon CUTTING MACHINES Charles" Gaianga, Maspeth,l fY. Application Marel-1- 28, 1949, Serial- No.y8 3,85`8 `6 claims. (C1. 14s- 157) This invention relates to S'prjeader's for slitt'ed planks or the like. .a

Theobj'ect of the invention lis to' provide a spreader which may .be readily placed in operative position, and which is simple' in construction, and which efficiently" carries outits objective, and which, when not desired to be used', may be readily transposed to inoperative posi"- tion below the table top to 4enable the cutter to' be used' for' otherv purposesv thany slitting.

In the slitting of Wooden planks by Va circular saw, the slittedl portion has" a tendency to bite the saw and the friction causes the;s'1itt'ed` en'd to jump up often injuring the attendant. However, the improved spreader avoids this action of the' board or plank, and by exerting a spreading action in the Ycut slit at the ,same time facilitates the sawing action.

The invention comprises a member secured to the frame of the machine having a slotted portion, a crescent shaped spreader adapted to have its rear part engage said slot when in operative position, and having its front part adapted to engage the slit in the board or plank formed by the saw at a position adjacent the saw, a pivoting means for the spreader to enable the spreader to be swung from said operative position to its inoperative position out of the path of the board or plank, and a spring for exerting a holding pressure on the spreader when in said slot. More particularly, in the embodiment shown, the spreader is made with a sleeve surrounding a bolt secured to the frame of the machine, with said spring acting upon the sleeve, and with means for adjusting the spring, the bolt acting as a pivot for the movement of the spreader from its inoperative to operative position and vice versa.

The invention will be more fully described hereinafter, embodiments thereof shown in the drawings, and the invention will be finally pointed out in the claims.

In the accompanying drawings,

Fig. 1 is a perspective view of a known circular saw wood cutting machine, with the im- Similar characters' of reference indi-cate corresponding parts throughout the various views. Referring to the drawings', the known saw table |0 havingI standards or frame Hand a base i 2, shown without the usual and known 25ppurtenances', as driving wheels, etc., supports a circular saw |'5. I

To a part l s of the frame ll there is attached an angular supporting'rnember I'T secured by bolts I3. This member' il has a' plurality of parallel ridges I9 and |9a forming, a space or ,slot 2li. The outer ridge I9 isprefera'bly provided with an inclined surface |9a. The member H is close against the' frame as at 2|.

Spaced from the" ridges I9 is ya horizontal' b'o-lt 22 Aextending through an opening 23' of `a' verti cal part IBa' of the frame', andthe bolt 22 has a bolt head: '2q and' an adjustable mit 2,5 on the screwthreaded end 26` of the' bolt 22"'. ang lar spreader member 3|] has a sleeve 3| surrounding the bolt 22 with its inner portion 32 resting on the frame la (when in off position, Figs. 3 and 4), and with its outer portion 33 spaced from the bolt head 24. A spiral spring 35 is interposed between the bolt head '24 and this outer portion 33 of the sleeve 3|. The sleeve 3| is preferably formed by looping the end of the plate 36. The plate 35 is bent at right angles at 31, and then extends in partial crescent shape to form the spreader or slitter proper 38. The edge 39 is bevelled to facilitate its entrance in the slit in the Wood formed by the saw cutting.

The spreader or slitter proper 38 is placed in operative position (Figs. 2 and 5) by inserting it into the slot of the saWn wood or plank, whereby the part 36 is raised, and the sleeve 3| is raised accordingly away from the part Ita of the frame, and the spring 35 is subjected to compression, which presses the spreader proper 38 with considerable force into the slot 2|), so as to hold tightly in the slot 2U to prevent the spreader proper 38 from being disengaged therefrom by any tugging of the wood planks during the sawing action.

The bevelled portion |9a of the outer ridge I9 facilitates the entrance of the spreader proper 38 into the slot 2U. The spring 35 may be adjusted by the rotation of the bolt nut 25. The plank or I board 4l] of wood is shown in phantom fashion in .Fig 1, with the saw I5 cutting the slit 42, and

active position, as shown in Fig. 3. The spreader or slitter proper is then entirely concealed below the table I0 and is out of the way of the operator. In Fig. 1 is shown a part of the table top separated from the main portion of the table top I, which part is capable of being moved away from the main portion, all as well known. This enables the spreader or slitter to be turned down into operative position. In Fig. 1, the bolt 24 is below the table top l0 at all times being visible in Fig. 1, as also the member I'i, because of the absence of the top, and due to the perspective drawing.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

I claim:

1. In a circular saw wood cutting machine, the combination of a member having a slot secured to the frame of the machine, a crescent shaped spreader having its back portion engaging said slot, and a spring for pressing said spreader into Said slot.

2. In a circular saw wood cutting machine, the combination of a member having a slot secured to the frame of the machine, a crescent shaped spreader having its back portion engaging said slot, a spring for pressing said spreader into said slot, a, pivot bolt for one end of said spreader and for supporting said spring secured to the frame of the machine, said spring permitting the spreader to be disengaged from the slot and swung intov` inoperative position around said bolt.

3. In a circular saw wood cutting machine, the combination of a member having a slot secured to the vframe of the machine, a crescent shaped spreader having its back portion engaging' said slot, a spring for pressing said spreader into said slot, a pivot bolt for one end of said spreader and for supporting said spring secured to the frame of the machine, said spring permitting the spreader to be disengaged from the slot and swung into inoperative position around said bolt, said spreader being bent into a sleeve surrounding said bolt.

4. In a circular saw wood cutting machine, the combination of a member having a slot secured to the frame of the machine, a crescent shaped spreader having its back portion engaging said slot, and a spring for pressing said spreader into said slot, said spreader having a part at right angles to the plane of the spreader, said part being bent to a sleeve shape.

5. In a circular saw wood cutting machine, the combination of a member having a slot secured to the frame of the machine, a crescent shaped spreader having its back portion engaging said slot, a spring for pressing said spreader into said slot, said spreader having a part at right angles to the plane of the spreader, said part being bent to a sleeve shape, and a bolt spaced from the slot the length of said part.

6. In a circular saw wood cutting machine, the combination of a member having a slot secured to the frame of the machine, a crescent shaped spreader having its back portion engaging said slot, a spring for pressing said spreader into said slot, said spreader having a part at right angles to the plane of the spreader, said part being bent to a sleeve shape, and a bolt spaced from the slot the length of said part, said spring acting on said sleeve and means on the bolt for adusting the spring.

CHARLES GALANGA.

No references cited.

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