US2120897A - Saw - Google Patents

Description

. June 14, 1938.-

L. N. MILLER sAwj Filed Sept so, 1936 z-sneets-sheeft 1 ATTORNEYS June 14, 1938, N, MILLER 2,120,897

SAW

Filed S'ep t. 50, 1936 2 she ts-sheet 2 Z4 64 6 63 70 72 0 r1 2 4a 76 68 7a ATTORNEYS Patented June 14, 1938 8, UNITED STATES PATENTIOFFICE SAW V ,Levi N. Miller, Elkhart, Ind.

. Application September 30, 1936, Serial No. 183,423

2 Claims.

My invention relates to circular saws, and has among its objects and advantages the provision of improved means for moving the saw to and fro at preselected angles including means for adjusting the saw in a vertical direction.

In the accompanying drawings:

Fig. 1 is a. top'plan view of the saw;

Fig. 2 is a view taken along the line 2--2 of Fig. 1; Fig. 3 is a sectional view along the line 3-3 of Fig. 2;

Fig. 4 is a sectional view along the line 4-4 of Fig. 2;

Fig. 5 is a sectional detail view; 6 Fig. 6 is a sectional view along the line 6--6 of Fig. 4; and

Fig. 7 is a sectional view along the line 'I--'! of Fig. 2.

In the embodiment selected to illustrate my invention, I make use of abase I8 including a post I2 having a shaft I4 upon which a bracket I6 is adjustably mounted. The flange I8 of the post I2 is secured to the base I8 by bolts 28 (see Fig. 4). To the upper end of the bracket I6 I connect a support 22 by bolts 24. This support includes a tubular member 26 which loosely supports a shaft 28. A frame 38 is bored at 32 for loosely receiving the shaft 28 while a similar shaft 34 is loosely supported within openings 36.

30 I provide the shafts 28 and 34 with threaded shanks 38 which have threaded relation with a head 48 which supports the saw 42. The head 48 and the shafts 28 and 34 are connected as a unit so that the saw 42 may be moved to and 35 fro because of the slidable mounting of the shafts.

The head 48 is provided with a handle 44 which facilitates shifting. p

I mount the saw 42 upon a shaft 46 rotatably mounted within bearings 48 carriedby a casting 58. This casting is provided with bores 52 for freely receiving bolts 54 having threaded relation at 56 with the head 48. The casting 58 may be adjusted about the bolts 54 as an. axis. I provide a screw 58 for adjusting the saw 48 vertically through the medium of the casting 58. In Fig. 4, the head 48 includes two ears 68 having a shaft 62 rotatably positioned thei'ebetween. Screws 64 pass loosely through the ears 68 and have threaded relation with the shaft 62 for mounting purposes. A transverse bore 66 is provided in the shaft 62 which has threaded relation with the screw 58. The lower end of the screw is provided with a ball 68 retained within the cone 18 formed integrally with the casting 58. I provide the 55 screw 68 with a neck I2 which passes through a larger opening 14 inthe apex of the cone. The plate 16 holds the ball 68 in assembled relation with the cone and is attached to the casting 58 by screws 18. The head 80 of the screw 58 is attached to the screw after assembly with the cone I8.

Precise adjustment of the saw 42 is attained through the medium of the screw 58. Adjustment of the saw 42 to cut at various angles in vertical planes is attained by rotating the bracket I6 about the shaft I4. The upper end of the post I2 includes a flange 82, while the lower end of the bracket I6 includes a relative flange 84- having a curved slot 86 arranged in concentric relation with the vertical axis of the shaft I4. A screw 88 fixedly connects the two flanges in various adjusted positions of the bracket I6. In Figs. 4 and 6, the flange 82 is provided with an extension 98 having a line 92' arranged in reading relation with graduations 94 upon the upper surface of the flange indicate angular adjustments of the saw in vertical planes. The screw 88 has threaded relation with the flange 82 only, and includes a knob 96 facilitating adjustment.

In addition to adjustment for different angles in vertical planes, the saw may be adjusted to 'various angles with respect to the horizontal. The frame 38 includes a flange 98 whichhas threaded relation with a screw I88 associated with a flange I82 carried by the support 22. The flange I82 is provided with a curved slot I84 arranged in. concentric relation. with the axis of the shaft 28. The flange 98 is provided with. a line I86 cooperating with graduations I88 upon the flange I82 to determine the angular adjust- 84. The graduations 94 ment of the saw with respect to the horizontal. I

The shafts 28 and 34 may be restrained from longitudinal shifting by a screw II8 cooperating with the flange II2 (see Fig. 5). In Fig. 2, I indicate the saw as being arranged in operative relation with a work table H4. The work to be cut is positioned upon a table 4 in the rear of the straight edge II6, which may be of wood. The straight edge may be provided with slots at predetermined angles, or the straight edge may be cut by the saw.

I position a safety guard II8 over a portion of the saw. This guard is mounted on a bracket I28 fastened to the head 48. The shafts '28 and 34 include flanges I22 which prevent the shafts from being pulled out of assembled relation with the frame 30. One end of the shaft 46 may be connected with a flexible coupling I24 for driving purposes (see Fig. 4). a

Without further elaboration, the foregoing will so fully explain my invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

I claim:

1. A device of the type described comprising a base including a standard, a frame including openings, a bracket connected with the standard and having an opening aligning with some of the openings in the frame, a shaft slidably mounted in said aligned openings and constitute ing a pivot for the frame, a rod slidably mounted in the other openings of the frame, a head fixedly connected with said shaft and said rod, a circular saw, a support for the circular saw, said support being mounted underneath the head and pivotally connected therewith, and means carried by the head and projecting through an opening in the same and connected with said support for moving the same about its axis.

2. A device of the type described comprising a base including an upright standard, a bracket carried by the upper end of said standard, a head, a frame pivotally connected at one side with said bracket, the pivotal connection comprising a shaft having one end fixedly connected with said head and slidably related to the bracket and the frame, a second shaft fixedly connected with said head and slidably related to the frame, a power driven saw, a support for the saw, said support being mounted underneath the head and pivotally connected therewith, and means carried by the head and projecting through an opening in the same and connected with said support for moving the same about its axis, said standard being adjustably connected with the base for pivotal action about a vertical axis. 7

' LEVI N; MILLER;

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